Doku Wiki

4.1.21_phy_structures

Anonymous (anonymous@undisclosed.example.com) — 2018-10-27T16:30:51+00:00

Overview Summary of PHY-related structures.

21st_century_c

Anonymous (anonymous@undisclosed.example.com) — 2019-07-16T14:51:30+00:00

Overview “21st Century C” nuggets. * LLVM STUFF Packages * gcc/clang * gdb (others?), lldb * valgrind * gprof * make * autotools versus meson * pkg-config * lint/splint * meld(?) * vagrant/libvirt Look into * designated initializers

advanced_c_links

Anonymous (anonymous@undisclosed.example.com) — 2018-01-26T14:24:07+00:00

Links * What is the type of "nullptr"? * Argument Dependent Lookup * What are inline namespaces for? * Do not extend the std namespace * Initialization * cppreference.com * Get to Know the New C++11 Initialization Forms * Delegating constructors * Recursion * IBM DeveloperWorks * Stack Overflow * accu.org * C++11 Delegated Constructor Pure Virtual Method & Function Calls — Dangers? * Initializing static data members * C++ reference using * What is __PRE…

advanced_git

Anonymous (anonymous@undisclosed.example.com) — 2019-03-29T11:36:37+00:00

Outline * Debugging source code using Git bisection * Resolving merge conflicts * Advanced rebasing techniques and repo reconstruction * Using worktrees * Registering and working with other remotes * How to work with submodules and subtrees

agl

Anonymous (anonymous@undisclosed.example.com) — 2019-04-08T17:49:10+00:00

Overview Working with Automotive Grade Linux (AGL). Links * AGL home page * Download and build * GitHub OpenIVI Mobility Sample config and build Install repo $ mkdir ~/bin $ export PATH=~/bin:$PATH $ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo $ chmod a+x ~/bin/repo

alloc_netdev_etherdev

Anonymous (anonymous@undisclosed.example.com) — 2018-08-28T08:00:22+00:00

Overview The various forms of allocating a netdevice. netdev private data From include/linux/netdevice.h, optional private data is stored (aligned) after the end of the structure: static inline void *netdev_priv(const struct net_device *dev) { return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); }

arm_kernel_panic

Anonymous (anonymous@undisclosed.example.com) — 2018-11-28T13:02:45+00:00

Overview An example of debugging a kernel panic by disassembling an ARM Linux kernel. The kernel panic [ 128.459816] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 128.468018] Unable to handle kernel NULL pointer dereference at virtual address 00000002 [ 128.468026] pgd = d8f38000 [ 128.468035] [00000002] *pgd=1a660831, *pte=00000000, *ppte=00000000 [ 128.468041] Internal error: Oops: 817 [#1] PREEMPT SMP ARM [ 128.468046] Modules linked in: [ 128.46806…

aslr

Anonymous (anonymous@undisclosed.example.com) — 2018-08-18T14:35:32+00:00

Overview ASLR (Address Space Layout Randomization) stuff (exec shield?). Links: * Kernel address space layout randomization (LWN, 2013) * Linux and ASLR: kernel/randomize_va_space * How Effective is ASLR on Linux Systems? (2013) Questions: * What about kernel ASLR (KASLR)? Look for RANDOMIZE options. Basics Binaries must be position-independent executables, so worthless on statically-compiled binaries. Possible settings:

blockchain_pages

Anonymous (anonymous@undisclosed.example.com) — 2018-05-17T13:06:19+00:00

Overview Initially scattered links and notes about blockchain, hyperledger and so on. Links Source/Home pages * https://www.hyperledger.org/ * Open Governance * https://github.com/hyperledger * https://gerrit.hyperledger.org Tutorials * https://chainhero.io/2017/07/tutorial-build-blockchain-app/ Courses ... coming soon ... General articles * The next wave of computing * A Brief History of Blockchain * 7 Cool Decentralized Apps Being Built on Ethereum * 21 Companies …

c_11_data_types

Anonymous (anonymous@undisclosed.example.com) — 2018-01-28T14:46:16+00:00

Discussion of existing/new C++11 data types, pointers and so on. * C++ type system overview * Fundamental types * Fixed width integer types * New “long long” * new "char16_t" * new "char32_t * new "nullptr"

c_11_features

Anonymous (anonymous@undisclosed.example.com) — 2018-02-02T09:23:08+00:00

Overview List of new/changed features in C++11, general links and feature-specific internal pages. Links to relevant external pages * ISO C++: Home of Standard C++ * ISO C++11 Overview * ISO C++ Super-FAQ * Bjarne's C++11 FAQ (obsoleted by ISO C++ Super-FAQ above) * Ten C++11 Features Every C++ Developer Should Use * C++11 Features Every C++ Programmer Should Know * The Biggest Changes in C++11 (and Why You Should Care) * Learn from Folly source code the new C++11 features.…

c_11_keywords

Anonymous (anonymous@undisclosed.example.com) — 2018-01-28T11:12:31+00:00

Keywords totally new to C++11 (see here): * alignas * alignof * char16_t * char32_t * constexpr * decltype * noexcept * nullptr * static_assert * thread_local Previous keywords that have had their meanings changed in C++11: * auto (now interpreted as auto specifier) * class (adds declaration of scoped enumeration type) * default (adds support for generating default special member functions, “= default”

c_11_language_features

Anonymous (anonymous@undisclosed.example.com) — 2018-01-28T20:13:04+00:00

Overview Links to new/changed C++11 language features (see here). Outstanding questions: * Should not explicit be tagged as having changed behaviour in C++11? Type-related features * "auto" specifier * "decltype" specifier * "constexpr" specifier * User-defined literals * nullptr Standard class "life cycle" methods * Delegating constructors * Move constructor * Move assignment * Inherited constructors Inheritance-related features

c_begin_end

Anonymous (anonymous@undisclosed.example.com) — 2018-02-05T12:15:55+00:00

Overview How begin and end are used in range-for statements. The rules (from TC++PL4) The expression after the colon must denote a sequence (a range); that is, it must yield a value for which we can call v.begin() and v.end() or begin(v) and end(v) to obtain iterators (§4.5):

c_casting

Anonymous (anonymous@undisclosed.example.com) — 2018-02-04T09:24:27+00:00

Overview Various forms of casting in C++. Types of casts static_cast Here. reinterpret_cast Here. dynamic_cast Here. const_cast Here. int{c} Read about it here. From TC++PL4, “the int we can construct from c”.

c_coding_style_advice

Anonymous (anonymous@undisclosed.example.com) — 2018-02-05T12:49:10+00:00

* Use auto whenever possible (particularly in range-for loops) * Introduce no variable before its time. * Prefer scoped, strongly-typed enums. * Avoid do statements.

c_compilation_oddities

Anonymous (anonymous@undisclosed.example.com) — 2018-02-03T09:31:59+00:00

* Why does bool b{7}; not generate a narrowing error? * Why does clang++ not allow int i{7};?

c_data_types

Anonymous (anonymous@undisclosed.example.com) — 2018-02-05T12:57:02+00:00

Built-in (fundamental) C++ data types: * integral * bool (true, false) * char, wchar_t * int, long, long long * floating point * float * double * long double * void User-defined types: * enumerations * classes Also consult:

c_debugging

Anonymous (anonymous@undisclosed.example.com) — 2018-02-04T09:28:55+00:00

Overview Both compile- and run-time debugging facilities for C++. assert() static_assert() gdb

c_enums

Anonymous (anonymous@undisclosed.example.com) — 2018-02-04T12:15:35+00:00

Overview C++11 extensions to enums -- enum classes versus original “plain” enums (scoped and strongly-typed versus unscoped). Basics Underlying type is int: enum struct|class Color { red, green, blue }; ... Color::red Color::green Possible definitions:

c_exceptions

Anonymous (anonymous@undisclosed.example.com) — 2018-02-02T11:02:52+00:00

Overview Exceptions, with emphasis on C++11 enhancements. Links: * cppreference.com "Exceptions" * throw-expression * try-catch block * function-try-block * noexcept specifier * noexcept operator * Dynamic exception specification (until C++17) Error handling possibilities * Terminate the program. * Return an error value. * Return a legal value and leave the program in an “

c_iterators

Anonymous (anonymous@undisclosed.example.com) — 2018-02-05T12:28:05+00:00

Overview Comprehensive coverage of C++11 iterators, including range-for loops and free-range begin and end. cppreference.com links: * Iterator library * begin * end

c_namespaces

Anonymous (anonymous@undisclosed.example.com) — 2018-02-01T14:50:54+00:00

Overview Mechanism for expressing logical grouping -- various properties of C++ namespaces, including: * terminology (declarations, definitions) * inline namespaces * unnamed namespaces * nested namespaces * namespace aliases * extensibility

c_stl

Anonymous (anonymous@undisclosed.example.com) — 2018-02-04T09:05:58+00:00

Basic containers * vector * array * valarray

c_terminology

Anonymous (anonymous@undisclosed.example.com) — 2018-02-03T10:18:19+00:00

Features: * implementation-defined: each implementation must provide a specific, well-deﬁned behavior for a construct and that behavior must be documented * unspecified: a range of possible behaviors are acceptable, but the implementer is not obliged to specify which actually occur

c

Anonymous (anonymous@undisclosed.example.com) — 2019-08-13T12:31:40+00:00

Overview C++ links/resources. TO DO: * Constant expressions (const and constexpr) (10.4) * A class with a constexpr constructor is called a literal type. * Implicit type conversion (10.5) * nothrow forms of new and delete (11.2.4) * initializer lists

c11

Anonymous (anonymous@undisclosed.example.com) — 2019-08-05T13:31:00+00:00

Overview Discussion of C11. Links: * C11: A New C Standard Aiming at Safer Programming * C in a Nutshell (2e) * 21st Century C * cppreference.com Fedora packages * clang * valgrind * meld [for graphical diff] * strace; ltrace * splint * pkg-config * gdb; lldb To document * List the properties of “embedded C”. Internal links

can_lin_buses

Anonymous (anonymous@undisclosed.example.com) — 2019-06-14T10:37:56+00:00

Overview Discussion of CAN and LIN buses, and their interoperability. Links CAN * * * Computer Solutions CAN Tutorial * A Simple Intro to CAN FD * Developments in Car Hacking * Hacking the CAN Bus: Basic Manipulation of a Modern Automobile Through CAN Bus Reverse Engineering LIN * LIN Rev 2.2A * TI LIN Protocol and Physical Layer Requirements * A Simple Intro to LIN Bus * Introduction to the LIN bus * Re-evalua…

cdk_on_fedora

Anonymous (anonymous@undisclosed.example.com) — 2018-04-04T20:03:28+00:00

Overview Installing and using Red Hat's CDK 3.3 on Fedora 27. “Container Development Kit 3.3 is based on Minishift 1.11.0. Using a single executable file, the minishift command deploys CDK as a Red Hat Enterprise Linux virtual machine, running OpenShift (which includes Kubernetes, the Docker service, and other container development and deployment software).

centos_package_management

Anonymous (anonymous@undisclosed.example.com) — 2018-11-08T14:21:33+00:00

Overview Basic and advanced package management. ELRepo * ELRepo.org Import public key: # rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org (external link) Install ELRepo: # rpm -Uvh https://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm (external link)

centos_pages

Anonymous (anonymous@undisclosed.example.com) — 2019-10-05T11:40:46+00:00

Overview Lots of disorganized stuff regarding CentOS 8, with no interest in earlier versions. Containers Internal pages * CentOS8_containers

centos8_containers

Anonymous (anonymous@undisclosed.example.com) — 2019-10-06T12:32:34+00:00

Overview Discussion of "Building, running, and managing containers" Look into: * Using the CRI-O Container Engine * OCI image format, OCI-compatible container engines * OpenShift * pods (OpenShift) * Create /etc/containers/nodocker to shut up info msg Images * ubi8/rhel * ubi8/rhel-minimal

cgroupsv2

Anonymous (anonymous@undisclosed.example.com) — 2019-07-28T15:25:23+00:00

Overview Stuff about cgroups v2. STUFF * every process belongs to exactly one cgroup; all threads of a process belong to the same cgroup * Kernel files arch/x86/configs/x86_64_defconfig CONFIG_CGROUPS=y CONFIG_CGROUP_FREEZER=y CONFIG_CPUSETS=y CONFIG_CGROUP_CPUACCT=y CONFIG_CGROUP_SCHED=y

comparing_device_trees_with_dtx_diff

Anonymous (anonymous@undisclosed.example.com) — 2018-11-17T18:33:55+00:00

Overview How to compare (typically in-kernel) device tree source files with dtx_diff. Preparing for comparison Given a kernel source tree at, say, ~/k/git/, prepare for comparison with: $ cd ~/k/git $ PATH=~/k/git/scripts/dtc:$PATH $ export ARCH=arm

console_loglevel

Anonymous (anonymous@undisclosed.example.com) — 2018-11-23T15:33:28+00:00

Overview Properties of console loglevel, and how to use it. Files Kernel source files * include/ * linux/ * printk.h * lib/ * Kconfig.debug * init/ * main.c * kernel/ * sysctl.c * printk/ * printk.c * Documentation/ * admin-guide/ * parameters.txt Running system files * /etc/sysctl.conf * /sys/module/printk/parameters

container_security_book

Anonymous (anonymous@undisclosed.example.com) — 2020-01-18T21:45:26+00:00

Overview General observations ... Observations * Is there a market for a book on underlying container technology? * Works with context outside of Docker? podman? cgroups v2? * “system containers” such as LXC and LXD? * technologies: *

containers_on_fedora_30

Anonymous (anonymous@undisclosed.example.com) — 2019-04-03T08:10:41+00:00

Overview Various pages and recipes for playing with containers on Fedora 30 (Branched at the moment). I've barely started so there's way more coming. TO DO * OCI container and image specifications (containers/image and containers/storage) Links

containers_on_fedora

Anonymous (anonymous@undisclosed.example.com) — 2018-04-21T19:12:54+00:00

Overview Not sure where this is going, but I want to start summarizing container technology on Fedora 28 Branched. General container links * Open Container Initiative * What even is a container: namespaces and cgroups * Anatomy of a Container * How Linux Kernel Cgroups And Namespaces Made Modern Containers Possible Internal wiki links * LXC on Fedora 28

containers_podman_buildah

Anonymous (anonymous@undisclosed.example.com) — 2020-01-31T16:48:02+00:00

Overview Lots and lots of links ... developers.redhat.com * Best practices for running Buildah in a container (D. Walsh, Aug 2019) * Building with Buildah: Dockerfiles, command line, or scripts (T. Sweeney, Dec 2019) * Build and run Buildah inside a Podman container (T. Sweeney, Apr 2019) * Monitoring container vitality and availability with Podman (B. Baude, Apr 2019) * How to run systemd in a container (D. Walsh, Apr 2019) * Podman and Buildah for Docker users (W. Henry, Feb 201…

debian_trixie_configuration

Anonymous (anonymous@undisclosed.example.com) — 2025-08-30T17:51:32+00:00

Overview Links and explanations on how to install dev tools in Debian Trixie. VScode * Install VS Code on Linux Podman Desktop * Flatpak Linux installation Dart/Flutter

device_tree_naming_conventions

Anonymous (anonymous@undisclosed.example.com) — 2018-11-17T16:02:46+00:00

From Toradex tutorial: Typically, a device tree is defined at multiple levels and composed of multiple device tree files. Device tree files (dts and dtsi) may include other device tree files known as includable device tree files (dtsi). In this manner, a board level device tree file (dts) generally includes a SoC level device tree file (dtsi). To support the modular approach of Toradex products, our device tree files usually have three levels of inclusion: carrier board, module and SoC level. T…

device_tree_node_requirements

Anonymous (anonymous@undisclosed.example.com) — 2018-11-18T14:59:52+00:00

Overview Device tree node requirements. Nodes #address-cells (R) #size-cells (R) model (R) compatible (R)

device_tree_standard_properties

Anonymous (anonymous@undisclosed.example.com) — 2018-11-18T13:54:43+00:00

Overview Standard properties of devicetrees. Properties compatible model phandle status #address-cells, #size-calls The #address-cells and #size-cells properties are not inherited from ancestors in the devicetree. They shall be explicitly defined.

devm_ioremap_resource

Anonymous (anonymous@undisclosed.example.com) — 2018-07-31T11:59:37+00:00

Overview Explain devm_ioremap_resource(), with examples particularly related to memory regions. Add some links. struct resource From include/linux/ioport.h, a device can have a number of resources of different types: /* * Resources are tree-like, allowing * nesting etc.. */ struct resource { resource_size_t start; resource_size_t end; const char *name; unsigned long flags; unsigned long desc; struct resource *parent, *sibling, *child; }

docker_initial_containers

Anonymous (anonymous@undisclosed.example.com) — 2019-01-24T12:23:39+00:00

Overview Getting started with Docker. Verifying installation $ docker --version Docker version 18.09.1, build 4c52b90 $ $ docker info Containers: 3 Running: 0 Paused: 0 Stopped: 3 Images: 2 Server Version: 18.09.1 Storage Driver: overlay2 Backing Filesystem: extfs Supports d_type: true Native Overlay Diff: true Logging Driver: json-file Cgroup Driver: cgroupfs Plugins: Volume: local Network: bridge host macvlan null overlay Log: awslogs fluentd gcplogs gelf journald json-file loc…

docker_installation_on_fedora

Anonymous (anonymous@undisclosed.example.com) — 2019-01-24T14:01:21+00:00

Overview How to install and test Docker and friends on current Fedora 29. Extra: * curl -fsSL get.docker.com -o get-docker.sh Links * * * * Post-installation steps for Linux Get rid of earlier Docker/container content Fedora's Docker packaging has undergone some reorganization, so you first need to get rid of all earlier Docker-related packages. First, t…

docker_on_fedora

Anonymous (anonymous@undisclosed.example.com) — 2018-04-04T20:05:50+00:00

Internal links * Docker installation on Fedora

docker

Anonymous (anonymous@undisclosed.example.com) — 2019-10-07T10:28:55+00:00

Overview Collection of Docker-related topics, including Fedora-related. Internal pages: * Dockerfiles The bigger picture * podman * containerd * buildah * cri-o TO DO * Properties of Docker CE * podman * Compose * Swarm * libcgroup *

dockerfiles

Anonymous (anonymous@undisclosed.example.com) — 2020-01-03T11:58:03+00:00

Overview Summary of Dockerfiles. External links: * https://takacsmark.com/dockerfile-tutorial-by-example-dockerfile-best-practices-2018/ * https://docs.docker.com/engine/reference/builder/ * https://www.docker.com/blog/intro-guide-to-dockerfile-best-practices/ Notes * podman also reads a Containerfile (also CPP-processed Containerfile.in) * default context is current directory (“.”) * rm ~/.config/containers/libpod.conf * .dockerignore

dokuwiki_syntax

Anonymous (anonymous@undisclosed.example.com) — 2025-05-18T09:40:47+00:00

Headline 5 Headline 4 Headline 3 Headline 2 Simple text rendering: * bold * italic * underlined * monospaced * Subscript1 * Superscript2 * Strikeout External links: * * * Crash Course Internal links (use hash for anchor): * gerrit_tutorial *

f30_buildah

Anonymous (anonymous@undisclosed.example.com) — 2019-04-03T08:23:40+00:00

Overview Using buildah on Fedora 30. Links: * buildah.io * Getting started with Buildah * Buildah 1.0: Linux Container construction made easy * Software Factory Container With Buildah And Podman * Creating small containers with Buildah Basics buildah sits on top of: * OCI containers/image project (copy, push, pull, inspect images) * OCI containers/storage project (store FS layers, images and containers)

f30_crio

Anonymous (anonymous@undisclosed.example.com) — 2019-03-30T15:14:25+00:00

Links * Using the CRI-O Container Engine

f30_linux_containers

Anonymous (anonymous@undisclosed.example.com) — 2019-03-23T15:05:02+00:00

Overview Container technology including LXC, LXD, LXCFS and CGManager. Links: * https://linuxcontainers.org/

f30_podman

Anonymous (anonymous@undisclosed.example.com) — 2019-03-31T15:55:21+00:00

Overview Setting up and running podman on Fedora 30 (currently Branched): Libpod provides a library for applications looking to use the Container Pod concept, popularized by Kubernetes. Libpod also contains the Pod Manager tool (Podman). Podman manages pods, containers, container images, and container volumes.

fedora_30_on_dell_5810

Anonymous (anonymous@undisclosed.example.com) — 2019-08-29T14:53:15+00:00

Overview Install/configure of Fedora 30 on Dell Precision 5810. Update Install fedora-workstation-repositories For various third-party repos, which you still need to enable: $ sudo dnf install fedora-workstation-repositories Then (for example):

fedora_exfat_filesystem

Anonymous (anonymous@undisclosed.example.com) — 2018-04-13T17:51:39+00:00

Overview How to install and use fuse-exfat and exfat-utils packages from RPM Fusion free on Fedora 28 Branched to format 64G Silicon Power micro SD card for music player. Configure RPM Fusion free Install rpmfusion-free-release-branched.noarch.rpm, which will install the following: $ rpm -ql rpmfusion-free-release /etc/pki/rpm-gpg/RPM-GPG-KEY-rpmfusion-free-fedora /etc/pki/rpm-gpg/RPM-GPG-KEY-rpmfusion-free-fedora-27 /etc/pki/rpm-gpg/RPM-GPG-KEY-rpmfusion-free-fedora-27-primary /etc/pki/rpm…

fedora_misc_pages

Anonymous (anonymous@undisclosed.example.com) — 2019-08-29T13:10:21+00:00

Overview Just random Fedora 28 (Branched) topics as they occur to me. Wiki links * Fedora releases (Koji/Bodhi) * Fedora exfat filesystem * Fedora 30 on Dell 5810

fedora_releases_koji_bodhi

Anonymous (anonymous@undisclosed.example.com) — 2019-08-28T11:04:51+00:00

Overview First pass at describing the Fedora update/upgrade/release process, based on a thread I started here. Adam's explanation in that thread This page may possibly be useful to you in understanding the details of this stuff: There are three things to keep in mind, broadly speaking: the Bodhi 'update' process, Koji tags, and the compose process.

fedora

Anonymous (anonymous@undisclosed.example.com) — 2019-08-22T19:40:52+00:00

Overview Fedora-related stuff. * New Fedora kernel * Virtualization on Fedora * Performance tuning on Fedora * VMware Player on Fedora * Jenkins on Fedora

fossology

Anonymous (anonymous@undisclosed.example.com) — 2019-11-24T20:20:00+00:00

Overview Adventures in installing and testing Fossology on Ubuntu 18.04.3, based on (and cloning from): * * Log in as default fossy/fossy. Quick start Possibly unnecessary steps identified: $ sudo utils/fo-installdeps $ [sudo apt install lsb-release]

fundamentals_of_container_technology

Anonymous (anonymous@undisclosed.example.com) — 2019-03-30T19:40:08+00:00

1-day course outline This outline represents the upcoming content for a single-day course on container technology, incorporating the Docker-compatible tools podman, buildah and skopeo. All of these tools are perfectly compatible with Docker. * An introduction to container technology

gcc_extensions

Anonymous (anonymous@undisclosed.example.com) — 2019-07-25T12:53:02+00:00

Overview Most useful GCC extensions to C language; avoid by using -pedantic. Extensions Statements and declarations in expressions A compound statement enclosed in parentheses may appear as an expression in GNU C. This allows you to use loops, switches, and local variables within an expression.

gdb

Anonymous (anonymous@undisclosed.example.com) — 2019-07-25T11:24:33+00:00

Overview GDB stuff, of course (separate Fedora package). Links: * GDB home page TO DO * frontends (gdbgui) * debug running process * kgdb * gdbserver .gdbinit SYNOPSIS /etc/gdbinit ~/.gdbinit ./.gdbinit DESCRIPTION These files contain GDB commands to automatically execute during GDB startup. The lines of contents are canned sequences of commands, described in the GDB manual in node "Sequences" -- shell command "info -f gdb -n…

gerrit_tutorial

Anonymous (anonymous@undisclosed.example.com) — 2020-04-21T17:55:06+00:00

Overview Tutorial for Gerrit, using mediawiki Gerrit repo. * Gerrit Mediawiki URL * Tutorialspoint tutorial Preparation * Install Git (duh) * Generate local SSH keys * Create account at Mediawiki, add SSH keys * Install git-review package on Linux Test access with (should see):

getting_started_with_virtualization_on_fedora

Anonymous (anonymous@undisclosed.example.com) — 2019-07-10T09:59:32+00:00

Overview Basic virtualization on Fedora using libvirt family of tools. Links * Getting started with virtualization (Fedora docs) * Enabling nested virtualization in KVM (Fedora docs) * https://wiki.libvirt.org/page/Main_Page * https://www.virt-tools.org/ Image formats * Converting between image formats * How to use qcow2 Image on Virtualbox * OVF? OVA? VMDK? – File Formats and Tools for Virtualization Creating virtual machines virt-install Package contents: $ rpm -ql virt…

git_add_rm

Anonymous (anonymous@undisclosed.example.com) — 2019-03-18T12:29:32+00:00

Overview How to stage changes in your working tree in the index to make them part of the next commit. How staging works and what it does The two commands that stage your changes in the index: * git add: Stage both new files and changes to existing files

git_adding_remotes

Anonymous (anonymous@undisclosed.example.com) — 2019-03-08T14:46:00+00:00

Overview How to add, use and delete remotes, using Linux kernel source repo as an example. Add a new remote Currently one remote: $ git remote -v origin https://github.com/torvalds/linux.git (fetch) origin https://github.com/torvalds/linux.git (push) $

git_advanced_topics

Anonymous (anonymous@undisclosed.example.com) — 2017-11-07T01:19:48+00:00

Advanced Git topics * Git under the hood (object database) * Review of “Undoing Everything” * Edge undo cases * Using reflog in depth * Submodules * Subtrees * Worktrees * Log search * Rerere * Workflow strategies * Managing multiple remotes effectively

git_aliases

Anonymous (anonymous@undisclosed.example.com) — 2019-02-25T13:15:09+00:00

Overview Proper definition and usage of Git aliases. Links: * https://stackoverflow.com/questions/7066325/list-git-aliases/22183573#22183573 * https://gist.github.com/pksunkara/988716 Setting and listing aliases Setting regular Git aliases How to set a regular Git alias (note the need for quotes with multi-word values): $ git config --global alias.a add $ git config --global alias.cm commit $ git config --global alias.co checkout $ git config --global alias.b branch $ git config --gl…

git_all_commands

Anonymous (anonymous@undisclosed.example.com) — 2019-03-18T11:08:06+00:00

Overview Categorized list of Git commands via git help --all. Commands Main porcelain commands add Add file contents to the index am Apply a series of patches from a mailbox archive Create an archive of files from a named tree bisect Use binary search to find the commit that introduced a bug branch List, create, or delete branches bundle Move objects and refs by archive checkout …

git_atlassian_content

Anonymous (anonymous@undisclosed.example.com) — 2018-02-11T12:14:56+00:00

Overview Links to numerous Atlassian Git tutorials, articles, blog posts, etc. Tutorials Main link. Learn Git * Learn Git with Bitbucket Cloud * Learn about code review in Bitbucket Cloud * Learn Branching with Bitbucket Cloud Beginner * What is version control? * What is Git? * Why Git for your organization * Install Git * Git cheat sheet Getting Started * Setting up a repository * Saving changes * Inspecting a repository * Undoing Commits and Changes * Rewrit…

git_attributes

Anonymous (anonymous@undisclosed.example.com) — 2019-03-15T07:45:24+00:00

Overview Basics of attributes, .gitattributes file. Using attributes, you can do things like specify separate merge strategies for individual files or directories in your project, tell Git how to diff non-text files, or have Git filter content before you check it into or out of Git. Links:

git_bare_shallow_clones

Anonymous (anonymous@undisclosed.example.com) — 2019-09-19T10:56:07+00:00

Overview Quick coverage of what you can do with bare/shallow clones, particularly with respect to tagging. Variations full clone $ du -s full 207848 full $ bare clone $ du -s bare 186116 bare $

git_bisect

Anonymous (anonymous@undisclosed.example.com) — 2019-02-26T21:54:21+00:00

Overview Both intro and advanced content on how to use git bisect. Some links: * Git Bisect Debugging with Feature Branches * git-bisect-lk2009 SYNOPSIS git bisect start [--term-{old,good}= --term-{new,bad}=] [--no-checkout] [ [...]] [--] [...] git bisect (bad|new|) [] git bisect (good|old|) [...] git bisect terms [--term-good | --term-bad] git bisect skip [(|)...] git bisect reset [] git …

git_blame

Anonymous (anonymous@undisclosed.example.com) — 2019-03-07T14:04:58+00:00

Overview Most useful variations of git blame, using examples from Linux kernel source. From man git-annotate: The only difference between this command and git-blame(1) is that they use slightly different output formats, and this command exists only for backward compatibility to support existing scripts, and provide a more familiar command name for people coming from other SCM systems.

git_clean

Anonymous (anonymous@undisclosed.example.com) — 2019-02-28T15:25:50+00:00

Overview General usage for “cleaning” your working directory: $ git clean [-d] [-f] [-i] [-n] [-q] [-e ] [-x | -X] [--] ... The single config setting for this command: * clean.requireForce Prerequisites: You should understand

git_clone_variations

Anonymous (anonymous@undisclosed.example.com) — 2018-09-17T11:47:04+00:00

Overview Numerous variations on git clone. For now, just go here.

git_clone

Anonymous (anonymous@undisclosed.example.com) — 2019-03-16T10:40:04+00:00

Overview Basic and advanced features of cloning. Shallow clones Read all about it here. Synopsis: --depth Create a shallow clone with a history truncated to the specified number of commits. Implies --single-branch unless --no-single-branch is given to fetch the histories near the tips of all branches. If you want to clone submodules shallowly, also pass --shallow-submodules. --shallow-since= Create a shallow clone with a history after the specified …

git_commit

Anonymous (anonymous@undisclosed.example.com) — 2019-02-28T12:36:51+00:00

Overview Miscellaneous notes on git commit, using the Linux kernel source as an example. SYNOPSIS git commit [-a | --interactive | --patch] [-s] [-v] [-u] [--amend] [--dry-run] [(-c | -C | --fixup | --squash) ] [-F | -m ] [--reset-author] [--allow-empty] [--allow-empty-message] [--no-verify] [-e] [--author=] [--date=] [--cleanup=] [--[no-]status] [-i | -o] [-S[]] [--] [...]

git_config

Anonymous (anonymous@undisclosed.example.com) — 2019-02-18T09:57:43+00:00

Overview How to examine, set and unset your Git configuration with git config (uses INI file format). Sample .gitconfig file: * TO DO: * GIT_CONFIG * GIT_CONFIG_NOSYSTEM SYNOPSIS $ man git-config ... snip ... git config [] [type] [--show-origin] [-z|--null] name [value [value_regex]] git config [] [type] --add name value git config [] [type] --replace-all name value [value_regex] git config [

git_count-objects

Anonymous (anonymous@undisclosed.example.com) — 2019-03-01T10:14:35+00:00

Overview How to count objects in the object store. SYNOPSIS git count-objects [-v] [-H | --human-readable] Basic usage Based on current state of “Pro Git” book repo: $ git count-objects 718 objects, 3120 kilobytes $ $ git count-objects -v count: 718 size: 3120 in-pack: 10966 packs: 6 size-pack: 175419 prune-packable: 45 garbage: 0 size-garbage: 0 $

git_dealing_with_remotes

Anonymous (anonymous@undisclosed.example.com) — 2019-04-04T00:51:02+00:00

Overview A multi-page discussion on dealing with remotes. * Git remote tracking branches * Git remote ls remote * Git establishing tracking branches * Git fetch pull push * Git pruning * Git adding remotes

git_diff

Anonymous (anonymous@undisclosed.example.com) — 2019-03-01T11:58:08+00:00

Overview The basic usage of git diff which, in general, compares two tree-ish objects, where a tree-ish object is one of: * a specific commit (HEAD, SHA-1 hash, tag or branch name) * the working tree * the index SYNOPSIS git diff [] [] [--] [...] git diff [] --cached [] [--] [...] git diff [] [--] [...] git diff [] git diff [] --no-index [--]

git_establishing_tracking_branches

Anonymous (anonymous@undisclosed.example.com) — 2019-04-04T01:53:56+00:00

Overview Various ways to establish tracking branches. Use linux-next remote ln with branches: * master * akpm * akpm-base * pending-fixes * stable $ git fetch ln $ git branch -a * master remotes/ln/akpm remotes/ln/akpm-base remotes/ln/master remotes/ln/pending-fixes remotes/ln/stable remotes/origin/HEAD -> origin/master remotes/origin/master $

git_fedora_packages

Anonymous (anonymous@undisclosed.example.com) — 2018-02-14T12:52:13+00:00

Overview Links to additional Git-related Fedora packages. * git-annex * git-archive-all * git-bugzilla * git-bz * git-cal * git-cola * git-evtag * git-extras * git-fame * gitflow * git-ftp * gitg * gitifyhg * git-lfs * git-octopus * gitolite * gitolite3 * gitosis * git-publish * git-pull-request * GitPython * git-remote-bzr * git-remote-hg * git-review * gitstats * git-tools * gitweb-caching * git-xcleaner Selected packages git-extras …

git_fetch_pull_push

Anonymous (anonymous@undisclosed.example.com) — 2019-04-04T03:20:32+00:00

Overview Fetching, pulling and pushing. Fetching $ git fetch [origin] $ git fetch ln $ git fetch --all Before fetching, remove any remote-tracking references that no longer exist on the remote. $ git fetch [-p|--prune]] Pushing $ git push origin thisbranch:thatbranch $ git push origin --delete

git_for_each_ref

Anonymous (anonymous@undisclosed.example.com) — 2019-03-08T19:02:33+00:00

Links: * Quickly seeing the age of your branches

git_fsck

Anonymous (anonymous@undisclosed.example.com) — 2019-03-12T15:21:50+00:00

Overview Using git fsck to display dangling and unreachable objects (should cover reflog first). Check: * Does --lost-found save blobs? Don't think so. SYNOPSIS git fsck [--tags] [--root] [--unreachable] [--cache] [--no-reflogs] [--[no-]full] [--strict] [--verbose] [--lost-found] [--[no-]dangling] [--[no-]progress] [--connectivity-only] [--[no-]name-objects] [*]

git_gc

Anonymous (anonymous@undisclosed.example.com) — 2019-03-07T09:46:25+00:00

Overview How to clean up dangling and unreachable objects. Links: * Stack Overflow posting SYNOPSIS git gc [--aggressive] [--auto] [--quiet] [--prune= | --no-prune] [--force] [--keep-largest-pack] OPTIONS In part: --prune= Prune loose objects older than date (default is 2 weeks ago, overridable by the config variable gc.pruneExpire). --prune=all prunes loose objects regardless of their age and increases the risk of corruption if another proces…

git_github_workflow

Anonymous (anonymous@undisclosed.example.com) — 2020-01-27T17:03:30+00:00

Overview Typical workflow for contributing to a public GitHub project, demonstrating the use of branches and remotes. For this demonstration, I'll use a GitHub project I've been contributing to recently -- -- which is the source of the Docker lookalike

git_good_commits

Anonymous (anonymous@undisclosed.example.com) — 2023-07-18T06:50:43+00:00

Overview What makes a good Git commit? Links: * Commit Message Guidelines * OpenStack advice * Chris Beams' advice * Stack Overflow advice * SlideShare presentation Any other good ones? Properties of a good Git commit (sort of subjective) * Subject (first) line (followed by blank line): * 60 char max (including subsystem name) for

git_grep

Anonymous (anonymous@undisclosed.example.com) — 2018-05-27T13:30:06+00:00

git_hooks

Anonymous (anonymous@undisclosed.example.com) — 2019-02-19T11:10:18+00:00

Overview Overview of hooks, concentrating on client-side hooks related to running git commit. The two types of hooks Hooks come in two flavours: * client-side * server-side Note that hooks can get their arguments from any combination of: *

git_ignore

Anonymous (anonymous@undisclosed.example.com) — 2019-02-22T18:18:00+00:00

Overview How to identify untracked files that Git should intentionally ignore when running numerous commands, such as git add -u, git status, git clean and many more. Some links: * Sample gitignore files * Generate a gitignore file Introductory .gitignore Basic .gitignore file Excerpts from the Linux kernel source top-level

git_init

Anonymous (anonymous@undisclosed.example.com) — 2019-02-21T12:57:56+00:00

Overview (not quite done here) Basic and advanced features for initializing a Git repository -- more content to be added. Working with the template directory By default, git init will populate your new .git directory with some auto-generated content, plus all of the content of the appropriate

git_install_from_source

Anonymous (anonymous@undisclosed.example.com) — 2019-10-02T20:36:28+00:00

Overview How to clone, build and install Git as a non-root user. The recipe Clone: $ git clone https://github.com/git/git.git Configure for personal destination directory: $ make configure $ ./configure --prefix=/home/rpjday/newgit Build and install:

git_instaweb

Anonymous (anonymous@undisclosed.example.com) — 2019-02-23T13:20:31+00:00

Overview From within a local repository, run: $ git instaweb $ man git-instaweb On Fedora: $ sudo dnf install git-instaweb

git_log

Anonymous (anonymous@undisclosed.example.com) — 2019-03-13T14:52:22+00:00

Overview Discussion of git log, with emphasis on reachability. Reachability git log displays repository history based on reachability: o---o---o---o---o master \ \ o---o---o---o---o next \ o---o---o topic

git_merge

Anonymous (anonymous@undisclosed.example.com) — 2019-03-13T13:09:04+00:00

Overview Both basic and advanced merging operations. SYNOPSIS git merge [-n] [--stat] [--no-commit] [--squash] [--[no-]edit] [-s ] [-X ] [-S[]] [--[no-]allow-unrelated-histories] [--[no-]rerere-autoupdate] [-m ] [-F ] [...] git merge --abort git merge --continue

git_move_uncommitted_changes_to_topic_branch

Anonymous (anonymous@undisclosed.example.com) — 2019-03-12T15:20:44+00:00

Overview How to move a pile of uncommitted changes from master to topic, because they should have been on the topic branch in the first place. The steps While still on master, tag the current HEAD for reference later: $ git tag backup Commit all your work to

git_mv

Anonymous (anonymous@undisclosed.example.com) — 2019-03-15T07:39:28+00:00

Overview Issues involving moving/renaming. * Why does Git not track renames? Operation “Git has a rename command git mv, but that is just for convenience. The effect is indistinguishable from removing the file and adding another with different name and the same content.”

git_plumbing_porcelain

Anonymous (anonymous@undisclosed.example.com) — 2019-03-01T13:39:58+00:00

* Porcelain: Commands that users are expected to use normally. * Plumbing: Underlying more basic utilities, meant to be used as the foundation for porcelain commands as well as automation utilities, as they are meant to be far more stable.

git_pruning

Anonymous (anonymous@undisclosed.example.com) — 2019-04-04T01:59:48+00:00

Pruning Introduction See man git-fetch, section “PRUNING”. Fetching and pruning At one time, I had a couple dead remote tracking branches: $ git branch -r origin/HEAD -> origin/master origin/WIP-syscall origin/master origin/proc-cmdline

git_rebase

Anonymous (anonymous@undisclosed.example.com) — 2019-04-06T21:34:17+00:00

git_reflog

Anonymous (anonymous@undisclosed.example.com) — 2019-03-12T15:05:01+00:00

Overview For refs that move (branches and HEAD), Git keeps a log of when they moved and why.

git_remote_ls_remote

Anonymous (anonymous@undisclosed.example.com) — 2019-03-08T13:27:39+00:00

Overview How to examine a remote with git remote and git ls-remote. Examine branches Local branches: $ git branch * master $ Remote branches: $ git branch -r origin/HEAD -> origin/master origin/master $ All branches: $ git branch -a * master remotes/origin/HEAD -> origin/master remotes/origin/master $

git_remote_tracking_branches

Anonymous (anonymous@undisclosed.example.com) — 2019-03-08T09:43:35+00:00

Overview Remote tracking branches, and how they work. Terminology * master: local tracking branch (in local object store) * origin/master: remote tracking branch (in local object store) * master on remote system: remote branch All of these branches can be

git_rev_list

Anonymous (anonymous@undisclosed.example.com) — 2017-09-08T08:58:12+00:00

Overview git rev-list is used to generate a list of (possibly) raw commit IDs to feed to another command. SYNPOSIS git rev-list [ --max-count= ] [ --skip= ] [ --max-age= ] [ --min-age= ] [ --sparse ] [ --merges ] [ --no-merges ] [ --min-parents= ] [ --no-min-parents ] [ --max-parents= ] [ --no-max-parents ] …

git_revert

Anonymous (anonymous@undisclosed.example.com) — 2019-03-13T12:49:49+00:00

Overview How to revert one or more commits, dealing with any possible merge conflicts along the way. SYNOPSIS git revert [--[no-]edit] [-n] [-m parent-number] [-s] [-S[]] ... git revert --continue git revert --quit git revert --abort

git_revisions

Anonymous (anonymous@undisclosed.example.com) — 2019-03-18T11:45:35+00:00

Overview A small sample of Git revisions; different ways to refer to commits (using Linux kernel source repo). Basic Git revisions HEAD (commonly the default) refers to the commit at the tip of the current branch: $ git show $ git show HEAD Commits are also reflected in branch or tag names:

git_searching

Anonymous (anonymous@undisclosed.example.com) — 2019-02-21T14:17:08+00:00

Overview How to search through commit history using either of: * git log * git grep Examples use the Git repository for the “Pro Git” book found here. Searching with "git log" The git log command supports looking for commits by the content of their commit messages, or even the content of the diff they introduced. All examples here can be enhanced with the regular

git_sharing_objects

Anonymous (anonymous@undisclosed.example.com) — 2019-03-15T07:56:01+00:00

Overview How to share objects with other local repositories -- see here. Commands Share: $ echo "/source/git/project/.git/objects" > .git/objects/info/alternates $ git repack -a -d -l Unshare (omit -l): $ git repack -a $ rm .git/objects/info/alternates

git_shortlog

Anonymous (anonymous@undisclosed.example.com) — 2019-03-18T12:45:11+00:00

Overview Most useful options for git shortlog, using “Pro Git” book repo as an example. SYNOPSIS Part of it: git shortlog [] [] [[--] ...] (Some) OPTIONS -n, --numbered Sort output according to the number of commits per author instead of author alphabetic order. -s, --summary Suppress commit description and provide a commit count summary only. ... snip ... Show only commits in the specified revision ra…

git_show

Anonymous (anonymous@undisclosed.example.com) — 2019-02-24T08:17:04+00:00

Overview The git show command can show various types of objects in various formats: * commits * trees * tags * blobs In addition, git show is used to show the state of repository contents as of a given commit, or even as it is in the index at the moment.

git_stash

Anonymous (anonymous@undisclosed.example.com) — 2019-02-26T19:18:01+00:00

git_submodules

Anonymous (anonymous@undisclosed.example.com) — 2019-02-27T19:14:10+00:00

Overview The good and the bad of submodules, using Wind River's Pulsar Linux as a convenient example. Stuff to add: * git config submodule..url PRIVATE_URL Links * man page * Pro Git -- Submodules * GitHub blog post * Atlassian -- Git submodules: core concept, workflows, and tips * Mastering Git submodules (Porteneuve, 2015) * Swap git submodule with own fork * Why your company shouldn’t use Git submodules SYNOPSIS git submodule [--quiet] add [] [--]

git_subtree

Anonymous (anonymous@undisclosed.example.com) — 2018-02-13T17:05:49+00:00

Overview The good and the bad of git subtree (mostly the good). Links * git subtrees: a tutorial (2014) * Atlassian -- Git subtree: the alternative to Git submodule (2013) * Understanding Git subtree (2014) * Atlassian -- The power of Git subtree (2015) * Mastering Git subtrees (2016) * A real world usage for Git subtrees * Using Git subtrees for repository separation (2013) * Using Git subtrees to split a repository (2014) Synopsis NAME git-subtree - Merge subtrees…

git_undoing_things

Anonymous (anonymous@undisclosed.example.com) — 2019-02-26T12:32:45+00:00

Overview Various ways to undo, backpedal and regret what you just did. The state of files For what follows, each file has three states: * HEAD: its state as of the most recent commit on this branch * staged: the changes added to the index *

git_whitespace

Anonymous (anonymous@undisclosed.example.com) — 2019-03-05T18:15:02+00:00

Overview A moderately (dis)organized list of features related to dealing with whitespace issues in Git, in no particular order. It's a matter of some debate whether EOL standardization is simply a subet of whitespace issues, or whether it deserves its own page.

git_workflow

Anonymous (anonymous@undisclosed.example.com) — 2018-05-24T06:59:49+00:00

Overview Variations on Git workflow. Links: * Oliver Steele's Git Workflow

git_worktree

Anonymous (anonymous@undisclosed.example.com) — 2019-03-06T08:24:01+00:00

Overview How to create, use and remove worktrees, as an alternative to constantly stashing and popping when you need to change contexts. DESCRIPTION From man git-worktree: A git repository can support multiple working trees, allowing you to check out more than one branch at a time. With git worktree add a new working tree is associated with the repository. This new working tree is called a "linked working tree" as opposed to the "main working tree" prepared by "git init" or "git clone". A r…

git_writing_an_arbitrary_blob

Anonymous (anonymous@undisclosed.example.com) — 2025-06-13T11:56:48+00:00

Overview How to write an arbitrary blob to a repository to add “supplemental” information, such as contact information or your public GPG key, but without making that blob part of the standard history. NOTE: Junio Hamano eventually decided this was a bad idea, as you can see here:

git

Anonymous (anonymous@undisclosed.example.com) — 2019-10-01T19:03:16+00:00

Current wiki pages New (yes, new) Git pages as of February, 2019 Every Git page below this section is a candidate for current updating -- many of those pages are still just fine, but are subject to improvement in the near future. * Git all commands * Git plumbing porcelain * Git init *

gnu_make

Anonymous (anonymous@undisclosed.example.com) — 2019-10-12T12:34:04+00:00

Overview This and that about GNU make. * prerequisites are free to be satisfied in any order * .DEFAULT_GOAL special variable

go_env

Anonymous (anonymous@undisclosed.example.com) — 2018-04-10T17:04:32+00:00

Overview Standard Go environment, and some details. go env $ go env GOARCH="amd64" GOBIN="" GOCACHE="/home/rpjday/.cache/go-build" GOEXE="" GOHOSTARCH="amd64" GOHOSTOS="linux" GOOS="linux" GOPATH="/home/rpjday/go" GORACE="" GOROOT="/usr/lib/golang" GOTMPDIR="" GOTOOLDIR="/usr/lib/golang/pkg/tool/linux_amd64" GCCGO="gccgo" CC="gcc" CXX="g++" CGO_ENABLED="1" CGO_CFLAGS="-g -O2" CGO_CPPFLAGS="" CGO_CXXFLAGS="-g -O2" CGO_FFLAGS="-g -O2" CGO_LDFLAGS="-g -O2" PKG_CONFIG="pkg-config" GOGCCFLAGS="-f…

go_fedora_packages

Anonymous (anonymous@undisclosed.example.com) — 2019-08-17T09:59:22+00:00

Overview golang on Fedora 30 ... and beyond. Base packages * golang * golang-src * golang-bin * go-srpm-macros * dep go env GOARCH="amd64" GOBIN="" GOCACHE="/home/rpjday/.cache/go-build" GOEXE="" GOFLAGS="" GOHOSTARCH="amd64" GOHOSTOS="linux" GOOS="linux" GOPATH="/home/rpjday/go" [personal workspace] GOPROXY="" GORACE="" GOROOT="/usr/lib/golang" [Go installation workspace] GOTMPDIR="" GOTOOLDIR="/usr/lib/golang/pkg/tool/linux_amd64" GCCGO="gccgo" C…

go_tour_notes

Anonymous (anonymous@undisclosed.example.com) — 2018-04-14T08:57:21+00:00

STUFF (tour) * explain early that functions are not polymorphic (basics section) * earlier: type aliasing (which introduces a new type, not just an alias, except for byte and rune) * swap first two pages of Methods section * I would move closures later (possibly after methods)

go

Anonymous (anonymous@undisclosed.example.com) — 2019-08-25T09:38:27+00:00

Overview Stuff regarding Go programming language. Figure out/Stuff * proper brace placement to avoid semicolon insertion * “import path” versus “package name” (factored import statement) * fmt.Printf() format specifiers * named return values (explicit or allow to default)

golangbot_tutorial

Anonymous (anonymous@undisclosed.example.com) — 2019-08-27T10:52:26+00:00

Overview Notes on Golangbot Golang tutorial series. The primary focus of Golang is to make the development of highly available and scalable web apps simple and easy. Misc * “_” is the “blank identifier” * Concurrency * Compiled * Static linking * Go Playground * Linux based IDEs?

hierarchical_device_files

Anonymous (anonymous@undisclosed.example.com) — 2018-12-11T13:08:44+00:00

Overview How hierarachical device files with respect to Yocto Project. beaglebone.conf As an example, Poky's beaglebone.conf file, which specifies the creation of three related .dtb files: ... KERNEL_IMAGETYPE = "zImage" KERNEL_DEVICETREE = "am335x-bone.dtb am335x-boneblack.dtb am335x-bonegreen.dtb" KERNEL_EXTRA_ARGS += "LOADADDR=${UBOOT_ENTRYPOINT}" ...

how_to_use_google_repo

Anonymous (anonymous@undisclosed.example.com) — 2020-04-21T11:07:12+00:00

Overview This is a tutorial on how to use Google's repo version control tool, as many people seem to have trouble getting a handle on its proper operation, and most of the documentation doesn't seem all that helpful in terms of clarification. For this tutorial, we'll be using AGL (Automotive Grade Linux) as an example.

hyperledger_fabric_how_many

Anonymous (anonymous@undisclosed.example.com) — 2018-05-17T14:11:40+00:00

Overview: How Many? This page will attempt to count how many of each component of a Hyperledger Fabric network there can be and, in answering that, proceed to explain where those components come from. Stay tuned ... So ... how many? Networks Addressing whether it was ever appropriate to create a whole new HF network as opposed to just adding channels to an existing network,

hyperledger_on_fedora

Anonymous (anonymous@undisclosed.example.com) — 2018-05-01T11:20:08+00:00

Overview What it takes to get Hyperledger Fabric running on current Fedora. Required packages According to this page, we need this as a starting point: * cURL * Node.js * npm package manager * Go * Docker * Docker Compose With respect to Fedora, that means:

hyperledger_sawtooth

Anonymous (anonymous@undisclosed.example.com) — 2018-03-20T10:59:35+00:00

Overview Notes on Sawtooth, based on EDX course chapter for the time being. Installation on Fedora $ sudo dnf install docker-ce docker-compose $ sudo dnf install nodejs npm $ sudo dnf install golang $ sudo dnf install curl Check versions: $ docker --version $ docker-compose --version $ npm --version $ node --version $ go version

i2c_ioctl_structures

Anonymous (anonymous@undisclosed.example.com) — 2018-11-21T13:11:00+00:00

Overview User space structures used by I2C ioctl(). Structures i2c_msg From include/uapi/linux/i2c.h: /** * struct i2c_msg - an I2C transaction segment beginning with START * @addr: Slave address, either seven or ten bits. When this is a ten * bit address, I2C_M_TEN must be set in @flags and the adapter * must support I2C_FUNC_10BIT_ADDR. * @flags: I2C_M_RD is handled by all adapters. No other flags may be * provided unless the adapter exported the relevant I2C_FUNC_…

i2c_smbus

Anonymous (anonymous@undisclosed.example.com) — 2018-11-21T13:09:11+00:00

Overview Kernel issues related to I2C and SMBus. Files * Documentation/ * i2c/ * devicetree/ * bindings/ * i2c/ * include/ * linux/ * i2c.h * i2c-dev.h * i2c-algo-bit.h * i2c-smbus.h * uapi/ * linux/ * i2c.h * i2c-dev.h * drivers/ * i2c/ * i2c-dev.c Internal wiki pages * i2c ioctl structures

ifreq_ethtool

Anonymous (anonymous@undisclosed.example.com) — 2018-09-02T06:56:12+00:00

Overview Notes on ethtool and underlying kernel hooks/code. General links: * ethtool git repo Kernel source links: * include/ * uapi/ * linux/ * if.h (for struct ifreq) * sockios.h (for SIOCETHTOOL} * ethtool.h Userspace and struct ifreq From ethtool's internal.h: /* Context for sub-commands */ struct cmd_context { const char *devname; /* net device name */ int fd; /* socket suitable for ethtool ioctl */ struct ifre…

interrupts

Anonymous (anonymous@undisclosed.example.com) — 2018-10-19T11:06:48+00:00

Overview Discussion of basic interrupt configuration. Links * include/ * linux/ * irq.h * irqchip.h * irqdesc.h * irqdomain.h * irqflags.h * irqhandler.h * irqnr.h * irqreturn.h * of_irq.h * irqchip/ * drivers/ * irqchip/ * of/ * irq.c Internal links: * irqchip

introduction_to_git

Anonymous (anonymous@undisclosed.example.com) — 2018-09-22T14:48:03+00:00

Introduction to Git (1 day) This course is a fairly intense introduction to the Git version control system, beginning with a brief historical overview of Git, then launching quickly into basic usage, cloning Git repositories, the basic local Git workflow, undoing both local and committed changes, tags, branches, merging, stashing and quite a bit more.

ip_command

Anonymous (anonymous@undisclosed.example.com) — 2018-08-18T13:46:33+00:00

Overview Usage of the ip command for network management. (Other relevant commands include ifconfig, netstat, ...) Links: * Red Hat cheat sheet help $ ip help Usage: ip [ OPTIONS ] OBJECT { COMMAND | help } ip [ -force ] -batch filename where OBJECT := { link | address | addrlabel | route | rule | neigh | ntable | tunnel | tuntap | maddress | mroute | mrule | monitor | xfrm | netns | l2tp | fou | macsec | tcp_metrics | token | netconf | ila | …

ip_up_down

Anonymous (anonymous@undisclosed.example.com) — 2018-10-04T11:09:54+00:00

Overview Control flow when running one of: * ip link show * ip link show eth0 * ip link set eth0 up * ip link set eth0 down Links: * iproute2 Issues: * iplink.c redefines iplink_req for no reason (line 218) * Define HAVE_LIBMNL for error support.

ipp_up_and_iff_running

Anonymous (anonymous@undisclosed.example.com) — 2018-08-27T11:03:04+00:00

Overview Testing the effect of interface manipulation on the values of IFF_UP and IFF_RUNNING. Links: * operstates.txt Flags Issues: * Is IFF_LOWER_UP significant? * Can we use IFF_DEBUG? * Understand actual meaning of “volatile”. From include/uapi/linux/if.h

irqchip

Anonymous (anonymous@undisclosed.example.com) — 2018-10-19T11:09:47+00:00

Overview Structure of irqchip. IRQCHIP_DECLARE Samples: irq-bcm6345-l1.c:IRQCHIP_DECLARE(bcm6345_l1, "brcm,bcm6345-l1-intc", bcm6345_l1_of_init); irq-bcm7038-l1.c:IRQCHIP_DECLARE(bcm7038_l1, "brcm,bcm7038-l1-intc", bcm7038_l1_of_init); irq-bcm7120-l2.c:IRQCHIP_DECLARE(bcm7120_l2_intc, "brcm,bcm7120-l2-intc", irq-bcm7120-l2.c:IRQCHIP_DECLARE(bcm3380_l2_intc, "brcm,bcm3380-l2-intc", irq-brcmstb-l2.c:IRQCHIP_DECLARE(brcmstb_l2_intc, "brcm,l2-intc", brcmstb_l2_edge_intc_of_init);

jenkins_on_fedora

Anonymous (anonymous@undisclosed.example.com) — 2019-08-22T20:10:12+00:00

Overview Installing, configuring and testing Jenkins on Fedora. Links: * * Packages jenkins $ rpm -ql jenkins /etc/jenkins /usr/lib/systemd/system/jenkins.service /usr/libexec/jenkins /usr/libexec/jenkins/jenkins /usr/share/jenkins /usr/share/jenkins/plugins /var/lib/jenkins /var/log/jenkins $

kernel_topics

Anonymous (anonymous@undisclosed.example.com) — 2019-04-07T10:15:12+00:00

Kbuild system General setup cgroups namespaces System calls UAPI IRQ Concurrency mutex semaphore spinlock completion RCU Timers Standard timers HR timers Tickless kernel Driver model Device model Debugging Macros Dynamic debugging

kernel.exec-shield

Anonymous (anonymous@undisclosed.example.com) — 2018-08-18T14:39:46+00:00

Overview What is the purpose of kernel.exec-shield? Links: * Linux Disable or Enable ExecShield Buffer Overflows Protection (2009) * Urban Penguin (2018)

kernel

Anonymous (anonymous@undisclosed.example.com) — 2019-07-27T19:54:21+00:00

Linux kernel info and subpages -- a ton of this needs to be updated or tossed at this point. New topics page here. Linux kernel subtopics * cgroupsv2 * SATA port multipliers * User mode helper * Printing/debugging * Working with device trees * ASLR * kernel.exec-shield * console loglevel * sysfs * interrupts * I2C SMBus * CAN LIN buses Networking topics (NEW) * phy.h Networking topics (OLD)

kubernetes_github_workflow

Anonymous (anonymous@undisclosed.example.com) — 2018-04-08T14:21:40+00:00

Overview How to contribute to Kubernetes via GitHub. The workflow First, create a GitHub fork of . Create the appropriate Go working directory: $ mkdir -p ~/go/src/k8s.io $ cd ~/go/src/k8s.io Make a local clone of your GitHub fork: $ git clone https://github.com/rpjday/kubernetes

kubernetes_install_on_fedora

Anonymous (anonymous@undisclosed.example.com) — 2018-04-09T10:15:06+00:00

Overview How to install Kubernetes on Fedora 28 using downloadable binary tarballs, based on the installation script you can find here. What this page does is explain what that script accomplishes. Note this does not allow you to build the source, only to run the binaries.

kubernetes_on_fedora

Anonymous (anonymous@undisclosed.example.com) — 2018-04-08T10:23:51+00:00

Getting Kubernetes kubernetes.io * https://kubernetes.io/ * Documentation * Blog Main GitHub links * Top level * Source * ChangeLog (v1.10.0) Installation script Script is here, run one of: $ wget -q -O - https://get.k8s.io | bash $ curl -fsSL https://get.k8s.io | bash Installation tarballs

kubernetes

Anonymous (anonymous@undisclosed.example.com) — 2018-04-08T17:43:52+00:00

Overview Top-level and sub-pages regarding Kubernbetes. External links * https://kubernetes.io/ * Documentation * Blog * https://github.com/kubernetes Internal wiki pages * Kubernetes GitHub Workflow * Install Kubernetes on Fedora 28

linux_device_trees

Anonymous (anonymous@undisclosed.example.com) — 2018-12-11T13:03:58+00:00

Overview Stuff related to device trees and the Linux kernel, using examples from the current Linux kernel. TO DO * overlays * keywords (/plugin/, /memreserve/, /omit-if-no-ref/, /bits/) MISC (for now) * “The unit-address must match the first address specified in the reg property of the node. If the node has no reg property, the @unit-address must be omitted and the node-name alone differentiates the node from other nodes at the same level in the tree. The binding for a particular bus …

linux_expr_command

Anonymous (anonymous@undisclosed.example.com) — 2019-09-18T10:44:50+00:00

Overview I think the Linux expr command is woefully underused for matching and extraction of substrings using basic regular expressions, so herewith a quick primer. Consider a fully-qualified package name with version number and, say, patch level number:

linux_kernel_cleanup

Anonymous (anonymous@undisclosed.example.com) — 2025-07-02T13:03:16+00:00

Overview Several years ago, I wrote a number of Linux kernel “cleanup” scripts that scanned the kernel source tree to identify obvious candidates for cleanup or simplification. The first few scripts are below, and they are admittedly imperfect as there is no way to consider every possible variation of what they look for, so they will almost certainly display some false positives. The point here is that Linux kernel

lk_usermodehelper

Anonymous (anonymous@undisclosed.example.com) — 2019-02-14T15:18:14+00:00

Overview Fundamentals of Linux kernel usermodehelper functionality. Links (coming soon): Files * include/linux/umh.h * kernel/umh.c * security/Kconfig include/linux/umh.h Types of execs #define UMH_NO_WAIT 0 /* don't wait at all */ #define UMH_WAIT_EXEC 1 /* wait for the exec, but not the process */ #define UMH_WAIT_PROC 2 /* wait for the process to complete */ #define UMH_KILLABLE 4 /* wait for EXEC/PROC killable */

logging

Anonymous (anonymous@undisclosed.example.com) — 2018-08-19T18:13:36+00:00

Overview Random thoughts on logging in Linux. man pages: * syslog.conf(5) man page * syslogd(8) man page * klogd(8) man page * sysklogd(8) man page * logger(1) man page * syslog(3) man page Other links: * System Log Management and Monitoring (etutorials)

lxc_on_fedora_28

Anonymous (anonymous@undisclosed.example.com) — 2018-04-21T19:32:17+00:00

Overview Getting LXC up and running on Fedora 28. External links * Fedora wiki LXC page * How to install and setup LXC (Linux Container) on Fedora Linux 26

madieu_linux_device_drivers_development

Anonymous (anonymous@undisclosed.example.com) — 2019-01-23T11:54:17+00:00

Overview Ongoing notes for Madieu's book. FIGURE OUT General * How CONFIG_EXTRA_FIRMWARE_DIR is used. * Difference between ARM toolchains. * make xconfig (PKG_CONFIG_PATH) * scripts/cleanfile Modules * /etc/modules-load.d/.conf

mcimx6q-sbc

Anonymous (anonymous@undisclosed.example.com) — 2017-10-04T18:34:16+00:00

Overview Figure out how to play both mono and stereo .wav files through the headphones on a Freescale MCIMX6Q-SDB running a stock core-image-minimal with only added recipe alsa-utils. Some /sys/kernel/debug/ files to check out later: * /sys/kernel/debug/asoc///dapm/*

meta-xilinx_and_zcu102-zynqmp

Anonymous (anonymous@undisclosed.example.com) — 2019-11-22T08:32:25+00:00

Overview Steps in building for ZCU102 using stock YP and meta-xilinx-bsp layer. Layers Check out: * poky [warrior] * meta-openembedded/meta-oe [master] * meta-xilinx [master] MACHINE = “zcu102-zynqmp” bblayers.conf BBLAYERS ?= " \ /home/rpjday/oe/dist/layers/poky/meta \ /home/rpjday/oe/dist/layers/poky/meta-poky \ /home/rpjday/oe/dist/layers/poky/meta-yocto-bsp \ /home/rpjday/oe/dist/layers/meta-openembedded/meta-oe \ /home/rpjday/oe/dist/layers/xilinx/meta-xilinx/meta-xi…

mii_and_mdio

Anonymous (anonymous@undisclosed.example.com) — 2018-10-09T11:06:20+00:00

Overview In-kernel structures for MII and MDIO. Links * Use The MDIO Bus To Interrogate Complex Devices * MDIO Background * Clause 22 Access to Clause 45 Registers * Intel MDIO Clause 45 Files * include/ * uapi/ * linux/ * mii.h * mdio.h * linux/ * mii.h * mdio.h * of_mdio.h * phy.h * drivers/ * net/ * mii.c * mdio.c * of/ * of_mdio.c MII

ndo_change_carrier

Anonymous (anonymous@undisclosed.example.com) — 2018-08-04T17:31:16+00:00

Overview Setting/detecting carrier, and the subsequent implications of setting net_device_ops ndo_change_carrier field (if any implications actually exist): Normal behaviour Net device state From include/linux/netdevice.h: Net device state: struct net_device { ... snip ... unsigned long state; ... snip ...

net_device_attributes

Anonymous (anonymous@undisclosed.example.com) — 2018-08-01T15:05:40+00:00

Overview Discussion about how net cable connect and disconnect are reflected in /sys. /sys/class/net/enp3s0/ files -r--r--r--. 1 root root 4096 Aug 1 10:41 addr_assign_type -r--r--r--. 1 root root 4096 Aug 1 10:41 address -r--r--r--. 1 root root 4096 Aug 1 10:41 addr_len -r--r--r--. 1 root root 4096 Aug 1 10:41 broadcast -rw-r--r--. 1 root root 4096 Aug 1 10:41 carrier -r--r--r--. 1 root root 4096 Aug 1 10:41 carrier_changes -r--r--r--. 1 root root 4096 Aug 1 10:41 carrier_down_count …

net_ioctl

Anonymous (anonymous@undisclosed.example.com) — 2018-09-04T10:31:33+00:00

Overview How net-based IOCTL calls are made -- prerequisite for other wiki pages. UAPI links: * include/ * uapi/ * linux/ * if.h (for struct ifreq) * sockios.h (for IOCTL commands) Kernel links: * net/ * socket.c (struct file_operations socket_file_ops) * core/ *

network_namespaces

Anonymous (anonymous@undisclosed.example.com) — 2018-08-19T16:24:46+00:00

Overview How to use network namespaces and ip netns to tie two ports together in order to ping out one port and to the other. Links: * ip-netns (8) man page * Introducing Linux Network Namespaces (Scott Lowe's Blog, Sep 2013) * Linux Network Namespaces (Open Cloud Blog, Sep 2013) * Namespaces in operation, part 7: Network namespaces (LWN.net, Jan 2014) * Full namespace series * Linux network namespaces - ping fails on specific veth (Server Fault, 2014) * Linux network namespac…

new_fedora_kernel

Anonymous (anonymous@undisclosed.example.com) — 2019-06-16T12:52:35+00:00

Overview How to build a state-of-the-art kernel for Fedora 30+.

oclug_dev_kits

Anonymous (anonymous@undisclosed.example.com) — 2018-02-06T19:29:51+00:00

Overview Kits to give away at OCLUG. Wandboard Quad (i.MX6) * Home page * Board, plastic case and 5V power supply TS-4800 plus TS-8160 baseboard * TS-4800 embedded computer-on-module * TS-8160 TS-SOCKET Baseboard * 9V power supply * DB9 serial cable ZOOM AM1808 eXperimenter kit * Home page * 5V power supply

oe_yp_backfill

Anonymous (anonymous@undisclosed.example.com) — 2020-04-11T12:06:17+00:00

Overview How backfilling works. Files documentation.conf DISTRO_FEATURES[doc] = "The features enabled for the distribution." DISTRO_FEATURES_BACKFILL[doc] = "Features to be added to DISTRO_FEATURES if not also present in DISTRO_FEATURES_BACKFILL_CONSIDERED. This variable is set in the meta/conf/bitbake.conf file and it is not intended to be user-configurable." DISTRO_FEATURES_BACKFILL_CONSIDERED[doc] = "Features from DISTRO_FEATURES_BACKFILL that should not be backfilled (i.e. added to DIST…

oe_yp_new_tarballs.sh

Anonymous (anonymous@undisclosed.example.com) — 2020-02-21T15:02:01+00:00

new_tarballs.sh #!/bin/sh for f in *.gz *.tgz *.bz2 *.xz *.rpm *.zip *.bin ; do if [ -f $f -a ! -h $f ] ; then echo "Copying $f ..." ; cp $f ~/oe/dist/tarballs/ fi done site.conf SCONF_VERSION = "1" SOURCE_MIRROR_URL ?= "file:///home/rpjday/oe/dist/tarballs/" INHERIT += "own-mirrors" BB_GENERATE_MIRROR_TARBALLS = "1" # BB_NO_NETWORK = "1"

oe_yp_python3_recipes

Anonymous (anonymous@undisclosed.example.com) — 2020-06-16T17:19:20+00:00

Overview Standards for pypi/setuptools3-based recipes. pypi.bbclass def pypi_package(d): bpn = d.getVar('BPN') if bpn.startswith('python-'): return bpn[7:] elif bpn.startswith('python3-'): return bpn[8:] return bpn PYPI_PACKAGE ?= "${@pypi_package(d)}" PYPI_PACKAGE_EXT ?= "tar.gz" def pypi_src_uri(d): package = d.getVar('PYPI_PACKAGE') package_ext = d.getVar('PYPI_PACKAGE_EXT') pv = d.getVar('PV') return 'https://files.pythonhosted.org/packag…

oe_yp_users_groups

Anonymous (anonymous@undisclosed.example.com) — 2020-04-11T18:27:46+00:00

Overview Customizing users and groups on a systemd-based (QEMU) system: INIT_MANAGER = "systemd" and making use of rootfs-postcommands. image.bbclass and IMGCLASSES # Handle inherits of any of the image classes we need IMGCLASSES = "rootfs_${IMAGE_PKGTYPE} image_types ${IMAGE_CLASSES}" # Only Linux SDKs support populate_sdk_ext, fall back to populate_sdk_base # in the non-Linux SDK_OS case, such as mingw32 IMGCLASSES += "${@['populate_sdk_base', 'populate_sdk_ext']['linux' in d.getVar("S…

oe-pkgdata-util

Anonymous (anonymous@undisclosed.example.com) — 2020-03-27T14:07:14+00:00

Overview Cool features of oe-pkgdata-util utility; works only on built content, and based on contents of tmp/pkgdata//. See also oe-pkgdata-browser. list-pkgs List all packages. $ oe-pkgdata-util list-pkgs acl acl-dbg acl-dev acl-doc acl-locale-de acl-locale-en+boldquot acl-locale-en+quot acl-locale-es acl-locale-fr acl-locale-gl acl-locale-pl acl-locale-sv acl-ptest acl-src attr attr-dbg attr-dev attr-doc ... snip ... busybox busybox-dbg busybox-dev busybox-hwclock busybox-ptest bus…

open_source_eda

Anonymous (anonymous@undisclosed.example.com) — 2019-04-08T08:30:11+00:00

Overview Open source electronic design automation (EDA). Links *

operstate

Anonymous (anonymous@undisclosed.example.com) — 2018-08-27T11:07:37+00:00

Overview Dissection of how operstate works (RFC 2863). 3.1.14. IfOperStatus in an Interface Stack When an interface is a part of an interface-stack, but is not the lowest interface in the stack, then: (1) ifOperStatus has the value 'up' if it is able to pass packets due to one or more interfaces below it in the stack being 'up', irrespective of whether other interfaces below it are 'down', ' dormant', 'notPresent', 'lowerLayerDown', 'unknown' or ' …

panel_upgrade

Anonymous (anonymous@undisclosed.example.com) — 2025-12-31T13:41:09+00:00

Overview Not all files are shown in their entirety, only the relevant information. This is information collected from across the 15G tarball; it's obvious that the contents of the tarball reflect stuff that is a few years old and seems to be simply the archive of someone's home directory.

petalinux_2019.1_install_structure

Anonymous (anonymous@undisclosed.example.com) — 2019-10-19T13:15:08+00:00

Overview Directory structure of (relevant) installed Petalinux 2019.1. TO DO: * Figure out xsct. Structure * settings.sh * tools/ * common/petalinux/ * bin/ * petalinux-boot * petalinux-build * petalinux-config *

petalinux_2019.1

Anonymous (anonymous@undisclosed.example.com) — 2019-12-06T11:10:46+00:00

Check out Variables: * DL_DIR * SSTATE_MIRRORS_append * PREMIRRORS_prepend In general: * diff between .hdf, .dsa, .xsa and .bsp files (DSA is super set of HDF holding additional config info that can be changed by XSCT/XSDK). * proper xsct

petalinux_2019.2_install_structure

Anonymous (anonymous@undisclosed.example.com) — 2019-11-07T11:12:19+00:00

Overview Directory structure of (relevant) installed Petalinux 2019.2 (still based on “thud”). TO DO: * Figure out xsct. * Installer oddities. * New Vitis-related content. Structure * settings.sh * tools/ * common/petalinux/ *

petalinux_2019.2_issues

Anonymous (anonymous@undisclosed.example.com) — 2019-11-24T14:22:36+00:00

* what is SDK compared to PetaLinux? * what is in a BSP file? * XSCT? * installer appears to not recognize install directory argument * can't select subset of architectures (why not?) * can't find right TERM type for “petalinux-config -c kernel

petalinux_2019.2_zcu102_project_structure

Anonymous (anonymous@undisclosed.example.com) — 2019-11-07T12:18:54+00:00

Overview Directory structure of new (generic) ZCU102 project, project-spec/ directory. Top-level .gitignore */*/config.old */*/rootfs_config.old build/ images/linux/ pre-built/linux/ .petalinux/* !.petalinux/metadata *.o *.jou *.log project-spec/meta-plnx-generated/ /components/plnx_workspace

phy_link_update

Anonymous (anonymous@undisclosed.example.com) — 2018-08-28T11:57:16+00:00

Overview Observations and proper use of the PHY link status handler. Issues: * Is phy_link_change() relevant? Don't think so. Explanation From here: Connecting to a PHY Sometime during startup, the network driver needs to establish a connection between the PHY device, and the network device. At this time, the PHY's bus and drivers need to all have been loaded, so it is ready for the connection. At this point, there are several ways to connect to the PHY: 1) The PAL handles every…

phy_mdio

Anonymous (anonymous@undisclosed.example.com) — 2018-07-25T18:38:47+00:00

Overview Discussion and code related to generic PHY and MDIO in Linux kernel. Links * Wikipedia page on MDIO * Total Phase "MDIO Background" * Electronic Design "Use The MDIO Bus To Interrogate Complex Devices" * IEEE "MDIO for IEEE 802.3ah" * IEEE "Management Registers and MIB Objects" * Actel Acronyms * MDIO: Management Data Input/Output * MMD: MDIO Manageable Devices * MDC: Management Data Clock * PHY: Physical Layer Protocol

phy.h

Anonymous (anonymous@undisclosed.example.com) — 2018-12-27T14:49:23+00:00

Overview Discussion of low-level PHY structures and operations, starting at include/linux/phy/phy.h and seeing where it goes from there. Structures -- struct phy and associated stuff struct phy struct phy { struct device dev; int id; const struct phy_ops *ops; struct mutex mutex; int init_count; int power_count; struct phy_attrs attrs; st…

phy

Anonymous (anonymous@undisclosed.example.com) — 2018-10-08T12:59:32+00:00

Overview Overview of MAC/PHY/PCS/PMA/PMD. Hierarchy: * Data link layer * LLC * MAC (FLGA core) * Reconciliation * PHY (FPGA core) * PCS (Physical Coding Sublayer) * PMA (Physical Medium Attachment) * PMD (Physical Medium Dependent)

pocketbeagle

Anonymous (anonymous@undisclosed.example.com) — 2018-10-08T10:33:27+00:00

Overview Notes on the Pocket Beagle. Links: * * Latest images * Getting started

podman

Anonymous (anonymous@undisclosed.example.com) — 2020-01-27T21:41:49+00:00

Overview podman-1.7.0 on Fedora 31. Informational version $ podman version Version: 1.7.0 RemoteAPI Version: 1 Go Version: go1.13.5 OS/Arch: linux/amd64 $ $ podman version --format json { "Client": { "RemoteAPIVersion": 1, "Version": "1.7.0", "GoVersion": "go1.13.5", "GitCommit": "", "Built": 0, "OsArch": "linux/amd64" }, "Server": { "RemoteAPIVersion": 1, "Version": "1.7.0", …

posix_shell_getpots

Anonymous (anonymous@undisclosed.example.com) — 2019-09-30T12:16:18+00:00

Overview An attempt at summarizing the right way to use POSIX-compliant getopts. A couple links: * https://pubs.opengroup.org/onlinepubs/9699919799/utilities/getopts.html * https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap12.html#tag_12_02 * https://sookocheff.com/post/bash/parsing-bash-script-arguments-with-shopts/ Starting points First, there has been much blood spilled discussing how to support optional arguments using getopts -- the correct solution is to not do …

printing_debugging

Anonymous (anonymous@undisclosed.example.com) — 2018-09-25T13:27:25+00:00

Overview Structure of kernel printing and debugging, from the ground up. printk kern_levels.h KERN_SOH_ASCII is prepended to string passed to printk(). #define KERN_SOH "\001" /* ASCII Start Of Header */ #define KERN_SOH_ASCII '\001' #define KERN_EMERG KERN_SOH "0" /* system is unusable */ #define KERN_ALERT KERN_SOH "1" /* action must be taken immediately */ #define KERN_CRIT KERN_SOH "2" /* critical conditions */ #define KERN_ERR KERN_SOH "3" /* error conditions */ #define KERN_WARNING…

proper_device_tree_design

Anonymous (anonymous@undisclosed.example.com) — 2018-11-18T10:46:54+00:00

Overview Proper .dts file design. One board, one .dts file Every distinct board merits its own .dts file, as in: * am335x-boneblack.dts * am335x-boneblack-wireless.dts * am335x-boneblue.dts * am335x-bone.dts * am335x-bonegreen.dts * am335x-bonegreen-wireless.dts

pulsar_linux

Anonymous (anonymous@undisclosed.example.com) — 2018-06-24T18:52:57+00:00

Overview Some puttering around notes on Pulsar Linux. Two things: * the active development branch for Pulsar Linux is pulsar-x * current development emphasizes the container-related images (cube-dom0, cube-essential, etc), not so much standard images like

python_file_hierarchy

Anonymous (anonymous@undisclosed.example.com) — 2020-06-17T16:36:36+00:00

Overview Recommended package hierarchy. Hierarchy * fubar/ * fubar/ * __init__.py * cli.py * storage.py * tests/ * __init__.py * test_storage.py * test_cli.py * data/ * image.png * setup.py * setup.cfg

python

Anonymous (anonymous@undisclosed.example.com) — 2020-06-17T14:40:17+00:00

Overview First pass at Python course topics. Links: ... coming ... Internal links * Python_file_hierarchy Packages * python3 (Python 3.7) $ python3 -V Python 3.7.4 $ Online tutorial 3 * string operations * string slices 4 * “else” clause on loop constructs

readme

Anonymous (anonymous@undisclosed.example.com) — 2017-04-15T11:28:05+00:00

test page readme

rh124_virtualization

Anonymous (anonymous@undisclosed.example.com) — 2018-11-08T23:35:37+00:00

Overview Virtualization lab for GL124. Packages virt-manager virt-viewer libvirt No actual files: $ rpm -qR libvirt /bin/sh libvirt-client = 4.7.0-1.fc29 libvirt-daemon = 4.7.0-1.fc29 libvirt-daemon-config-network = 4.7.0-1.fc29 libvirt-daemon-config-nwfilter = 4.7.0-1.fc29 libvirt-daemon-driver-interface = 4.7.0-1.fc29 libvirt-daemon-driver-libxl = 4.7.0-1.fc29 libvirt-daemon-driver-lxc = 4.7.0-1.fc29 libvirt-daemon-driver-network = 4.7.0-1.fc29 libvirt-daemon-driver-nodedev = 4.7.0-1.f…

risc-v

Anonymous (anonymous@undisclosed.example.com) — 2022-03-01T14:09:51+00:00

= STUFF * Peruse runqemu, clarify how it creates command for qemuriscv64. = Links == OE-Core layer * OE-Core * scripts/ * runqemu * meta/ * classes/ * qemu.bbclass * qemuboot.bbclass * conf/ * machine/ * qemuriscv64.conf * include/ * qemu.inc * riscv/ * qemuriscv64.inc * tune-riscv.inc * arch-riscv.inc * recipes-bsp/ * opensbi/ * opensbi_1.0.bb

sata_port_multipliers

Anonymous (anonymous@undisclosed.example.com) — 2019-04-24T12:30:56+00:00

Overview Discussion of kernel support for SATA port multipliers. Kernel content * include/ * linux/ * ata.h * libata.h * drivers/ * ata/ * Kconfig * Makefile * libata-pmp.c * libata-eh.c Build files [drivers/ata]

sei_cert_c_coding_standard

Anonymous (anonymous@undisclosed.example.com) — 2019-08-06T21:17:41+00:00

Links * Preprocessor (PRE) 2.1 PRE30-C. Do not create a universal character name through concatenation 2.2 PRE31-C. Avoid side effects in arguments to unsafe macros An unsafe function-like macro is one whose expansion results in evaluating one of its parameters more than once or not at all.

shell_dump_function

Anonymous (anonymous@undisclosed.example.com) — 2019-10-24T23:44:38+00:00

To save piles of typing when debugging bash scripts, a dump() function that understands both regular and associative arrays: is_array() { if [ -n "$BASH" ]; then declare -p ${1} 2> /dev/null | grep 'declare \-a' >/dev/null && return 0 fi return 1 } is_hash() { if [ -n "$BASH" ]; then declare -p ${1} 2> /dev/null | grep 'declare \-A' >/dev/null && return 0 fi return 1 } dump() { for var; do if is_array ${var} ; then echo ${var} =…

sidebar

Anonymous (anonymous@undisclosed.example.com) — 2025-05-17T08:38:41+00:00

* Home * All things Xilinx

software_testing

Anonymous (anonymous@undisclosed.example.com) — 2019-08-04T09:18:20+00:00

Overview Condensation of software testing tutorial here. STUFF General points * Use library routines as much as possible. * Develop wrappers that incorporate your features. * Use REGEX parsers to validate input, this forces you to clarify valid input.

sphinx_on_fedora

Anonymous (anonymous@undisclosed.example.com) — 2020-01-29T20:23:47+00:00

Overview Quick tutorial on setting up Sphinx for ReST processing on Fedora, mostly to work on libpod documentation. Packages $ sudo dnf install python3-sphinx Creating a new project $ sphinx-quickstart * separate source and build directories

start

Anonymous (anonymous@undisclosed.example.com) — 2026-03-18T19:17:02+00:00

NOTE: A great deal of this is quite old as I did not update a lot of it while I had full-time employment, but I'm going to clean it up as I think it still has value to people interested in some of these technologies. THINKING ABOUT: * cgroups and namespaces

systemd-coredump

Anonymous (anonymous@undisclosed.example.com) — 2018-11-16T11:50:20+00:00

Overview Details of core files related to systemd-coredump. External pages: * man page * FreeDesktop page File list * /usr/lib/ * sysctl.d/ * 50-coredump.conf * systemd/ * systemd-coredump * system/ * systemd-coredump@.service * systemd-coredump.socket

systemd-sysctl

Anonymous (anonymous@undisclosed.example.com) — 2018-11-16T11:04:27+00:00

Overview Breakdown of systemd-sysctl. External links: * man page * FreeDesktop page File list * /etc/ * sysctl.conf [empty] * sysctl.d/ * 99-sysctl.conf [link to above so empty] * /usr/lib/ * systemd/ * systemd-sysctl * system/ * systemd-sysctl.service

systemd

Anonymous (anonymous@undisclosed.example.com) — 2018-11-16T11:05:20+00:00

Overview Various tutorials/summaries/references for aspects of the Red Weed that is systemd. Internal links * systemd-sysctl * systemd-coredump

u-boot_am335x_evm

Anonymous (anonymous@undisclosed.example.com) — 2019-04-09T13:37:56+00:00

Overview Discussion of the supporting files and directories to support the TI AM335X EVM, as an example of porting a specific board, based on the following defining values. First, from configs/am335x_evm_defconfig: CONFIG_ARM=y CONFIG_ARCH_OMAP2PLUS=y CONFIG_TI_COMMON_CMD_OPTIONS=y CONFIG_AM33XX=y CONFIG_SPL=y

u-boot_badref

Anonymous (anonymous@undisclosed.example.com) — 2018-12-11T19:30:49+00:00

Overview The result of running my find_badref_configs.sh script on the U-Boot source tree, which looks for CONFIG_* variables being tested, but apparently not defined in any Kconfig* file. find_badref_configs.sh #!/bin/sh SCAN_DIR=${1-*} CVARS=$(find ${SCAN_DIR} -name "*.[ch]" | \ grep -v "mach-types.h" | \ xargs ifnames | \ grep "^CONFIG_" | \ cut -d' ' -f1 | \ sed "s/^CONFIG_//" | \…

u-boot_board_info

Anonymous (anonymous@undisclosed.example.com) — 2019-04-14T14:49:14+00:00

Overview Explanation of initialization of struct bd_info, in the context of Zedboard. include/asm-generic/u-boot.h Non-Zedboard content removed for brevity. typedef struct bd_info { unsigned long bi_memstart; /* start of DRAM memory */ phys_size_t bi_memsize; /* size of DRAM memory in bytes */ unsigned long bi_flashstart; /* start of FLASH memory */ unsigned long bi_flashsize; /* size of FLASH memory */ unsigned long bi_flashof…

u-boot_board.c_routines

Anonymous (anonymous@undisclosed.example.com) — 2019-12-28T09:23:42+00:00

Overview This page provides examples of the sorts of routines that are frequently defined in a board's board.c file. We can break those routines up into routines invoked from: * common/board_f.c * common/board_r.c board_f.c Weak functions *

u-boot_boot_sequence

Anonymous (anonymous@undisclosed.example.com) — 2019-12-28T08:33:19+00:00

Overview The U-boot boot process, using Xilinx ZCU102 (Rev 1.0) as an example. arch/arm/cpu/armv8/start.S /************************************************************************* * * Startup Code (reset vector) * *************************************************************************/ ... master_cpu: bl _main

u-boot_configuration

Anonymous (anonymous@undisclosed.example.com) — 2019-12-27T07:02:40+00:00

Overview Show the result of doing a configuration, using Xilinx ZCU102 Rev 1.0 as an example. make xilinx_zynqmp_zcu102_rev1_0_defconfig Preliminary: CONFIG_ARM=y ... CONFIG_SYS_ARCH="arm" CONFIG_SYS_CPU="armv8" CONFIG_SYS_SOC="zynqmp" CONFIG_SYS_VENDOR="xilinx" CONFIG_SYS_BOARD="zynqmp" CONFIG_SYS_CONFIG_NAME="xilinx_zynqmp" ... CONFIG_ARM64=y CONFIG_SYS_ARM_ARCH=8 ... # CONFIG_ARCH_ZYNQ is not set # CONFIG_ARCH_ZYNQMP_R5 is not set CONFIG_ARCH_ZYNQMP=y

u-boot_for_arm

Anonymous (anonymous@undisclosed.example.com) — 2019-04-07T11:20:05+00:00

Overview Setting up ARM toolchain for U-Boot -- for validation, see if it compiles Zedboard: $ make zynq_zed_defconfig The possibilities Fedora 30 package gcc-arm-linux-gnu The package: $ rpm -qi gcc-arm-linux-gnu Name : gcc-arm-linux-gnu Version : 8.2.1 Release : 1.fc30.2 Architecture: x86_64 Install Date: Thu 21 Mar 2019 09:29:31 AM EDT Group : Unspecified Size : 81242502 License : GPLv3+ and GPLv3+ with exceptions and GPLv2+ with exceptions and LGPLv2+…

u-boot_make_badref

Anonymous (anonymous@undisclosed.example.com) — 2019-04-13T10:41:16+00:00

Overview This page lists everywhere in the U-Boot source code that Makefiles are testing “CONFIG_” Kbuild options that do not appear to be defined in any Kconfig file. The output for the entire code base >>>>> ADI_GPIO2 ./drivers/gpio/Makefile:obj-$(CONFIG_ADI_GPIO2) += adi_gpio2.o >>>>> ALI152X ./drivers/misc/Makefile:obj-$(CONFIG_ALI152X) += ali512x.o >>>>> CMD_INI ./cmd/Makefile:obj-$(CONFIG_CMD_INI) += ini.o >>>>> CMD_MFSL ./cmd/Makefile:obj-$(CONFIG_CMD_MFSL) += mfsl.o >>>>> DATAFLASH_M…

u-boot_porting_board

Anonymous (anonymous@undisclosed.example.com) — 2019-12-27T08:55:56+00:00

Overview Quick run-through of the supporting content and files for a specific board; in this case, the hypothetical ZynqMP-based “Coyote” board from Acme Corp, with emphasis on Kbuild structure and not header files wherever possible. Based on:

u-boot_tools

Anonymous (anonymous@undisclosed.example.com) — 2019-04-08T10:24:14+00:00

Overview Fedora 30 uboot-tools package. Info $ rpm -qi uboot-tools Name : uboot-tools Version : 2019.04 Release : 0.8.rc4.fc30 Architecture: x86_64 Install Date: Tue 02 Apr 2019 05:28:07 AM EDT Group : Unspecified Size : 2380032 License : GPLv2+ BSD LGPL-2.1+ LGPL-2.0+ Signature : RSA/SHA256, Sun 31 Mar 2019 08:15:53 PM EDT, Key ID ef3c111fcfc659b9 Source RPM : uboot-tools-2019.04-0.8.rc4.fc30.src.rpm Build Date : Sun 31 Mar 2019 08:10:47 AM EDT Build Host…

u-boot_unused_configs

Anonymous (anonymous@undisclosed.example.com) — 2019-04-13T11:29:09+00:00

Overview Script that scans a Kbuild-based code base to identify CONFIG_ options that are defined in Kconfig files but that appear to be unused/untested in the code base. Please do not make fun of the coding style of the script; I wrote it many, many years ago, and it would probably be far better written in Python.

u-boot

Anonymous (anonymous@undisclosed.example.com) — 2019-12-28T08:26:06+00:00

Overview Various U-Boot thingies, currently in very early stages. Much more to come. Cool links * Embedded Linux Conference Europe 2017 Porting U-Boot and Linux on new ARM boards:a step-by-step guide * Xilinx wiki "Build U-Boot" Test scripts * U-Boot unused configs * U-Boot badref * U-Boot make badref Updated internal links * U-Boot configuration * U-Boot porting board * U-Boot boot sequence Older internal links All of the below is in a state of churn as I try to figure …

unix_shell_programming_pt2092

Anonymous (anonymous@undisclosed.example.com) — 2019-06-02T15:31:05+00:00

Links General: * Open Group Shell Command Language * How can I test for POSIX compliance of shell scripts? * DashAsBinSh * Bash POSIX Mode * ProTech H4322S POSIX Shell programming Bashisms and syntactic analysis: * How to make bash scripts work in dash * Fedora “devscripts-checkbashisms” package. * Fedora “ShellCheck” package * vim syntax highlighting Examine/cover * print/printf * restricted shell (bash -r) * ORA shell book

user_group_management

Anonymous (anonymous@undisclosed.example.com) — 2018-11-08T12:27:10+00:00

Overview Commands and files related to uwers and groups. Files $ cat /etc/passwd $ cat /etc/group $ cat /etc/default/useradd $ cat /etc/login.defs $ ls -a /etc/skel $ less /etc/profile Commands * useradd, usermod, userdel * groupadd, groupmod

virtualbox_6.0

Anonymous (anonymous@undisclosed.example.com) — 2019-01-17T16:34:45+00:00

Overview Installing/using VB 6.0 on Fedora 29. Q * Will Guest Additions be added automatically? (silverblue) How can you tell if they're installed? * image formats (OVF versus OVA) * “front end” vs “frontend” vs “front-end”? * groups of groups of VMs?

virtualbox_on_fedora

Anonymous (anonymous@undisclosed.example.com) — 2018-04-06T11:41:49+00:00

Installation First: $ cd yum.repos.d $ sudo wget http://download.virtualbox.org/virtualbox/rpm/fedora/virtualbox.repo Contents: [virtualbox] name=Fedora $releasever - $basearch - VirtualBox baseurl=http://download.virtualbox.org/virtualbox/rpm/fedora/$releasever/$basearch enabled=1 gpgcheck=1 repo_gpgcheck=1 gpgkey=https://www.virtualbox.org/download/oracle_vbox.asc

virtualization_on_fedora_pages

Anonymous (anonymous@undisclosed.example.com) — 2018-11-08T23:14:22+00:00

External links * A Practical Introduction to Container Terminology Internal links * Getting started with virtualization on Fedora * VirtualBox on Fedora * CDK on Fedora * Docker on Fedora * Kubernetes on Fedora * RH124 virtualization

virtualization_on_fedora

Anonymous (anonymous@undisclosed.example.com) — 2019-07-10T09:58:54+00:00

Overview Virtualization on Fedora [30], including: * KVM * QEMU * libvirt Links External links: * Fedora Project -- https://docs.fedoraproject.org/en-US/quick-docs/getting-started-with-virtualization/ * How to install KVM on Fedora 30/29/28 * Server World Fedora 30 KVM Check for virtualization support These extensions are called Intel VT or AMD-V. $ egrep '^flags.*(vmx|svm)' /proc/cpuinfo

vivado_2018.3_zedboard

Anonymous (anonymous@undisclosed.example.com) — 2019-05-20T12:05:41+00:00

Overview Steps in building/exporting the output for Zynq Zedboard from Vivado 2018.3. Directory setup $ mkdir ~/xilinx/projects/vpjs/[zed_top/zedboard/] Vivado steps Create new project * Select Zedboard (create subdirectory) * RTL project

vmware_player_on_fedora

Anonymous (anonymous@undisclosed.example.com) — 2019-08-16T09:00:22+00:00

Overview Installing, configuring and running VMware Player on fully-updated Fedora 30. Links: *

walnascar_yocto_project_build_on_adlink_i.mx6_som

Anonymous (anonymous@undisclosed.example.com) — 2025-12-23T18:08:03+00:00

Dec 23 update Add trailing section on “ionstall_cylon.sh” installation script. Overview (page last reviewed and updated Dec 20, 2025) This page documents the current status of trying to get a modern (“walnascar”) Yocto Project (YP) build on a legacy carrier board built around an

wind_river_lts19

Anonymous (anonymous@undisclosed.example.com) — 2020-05-24T11:01:40+00:00

Overview Working with Wind River LTS19. Links: * * * STUFF * WR-specific extensions (templates/features/tools), should these be used to be incompatible with pure YP? * how to update wrlinux-x to UPDATE7? * New support to deploy a platform project image based on the intel-x86-64 BSP with the runqemu command. You no longer require a …

xilinx_running_petalinux

Anonymous (anonymous@undisclosed.example.com) — 2019-10-20T12:01:20+00:00

Overview This page steps through building for a ZCU102 using an .hdf file downloaded from GitHub, and PetaLinux 2019.1. Format of the ZCU102 HDF file -rw-r--r--. 1 rpjday rpjday 46772 May 5 15:09 design_1_bd.tcl -rw-r--r--. 1 rpjday rpjday 124564 May 5 15:09 design_1.hwh -rw-r--r--. 1 rpjday rpjday 26510901 May 5 15:09 design_1_wrapper.bit -rw-r--r--. 1 rpjday rpjday 922239 May 5 15:09 psu_init.c -rw-r--r--. 1 rpjday rpjday 921403 May 5 15:09 psu_init_gpl.c -rw-r--r--. 1 rpjday…

xilinx

Anonymous (anonymous@undisclosed.example.com) — 2025-05-17T08:48:02+00:00

Overview All things Xilinx from a Yocto Project perspective. Links Official Xilinx wiki GitHub * Xilinx * linux-xlnx * u-boot-xlnx * meta-xilinx * meta-xilinx-tools * meta-petalinux * hdf-examples * XRT Xilinx embedded software tools: * Xilinx SDK * Petalinux tools Internal links (NEW) * PetaLinux 2019.1 * PetaLinux 2019.2 issues * PetaLinux 2019.2 install structure * PetaLinux 2019.2 ZCU102 project structure * meta-xilinx and zcu102-zynqmp * ZCU1…

yocto_project

Anonymous (anonymous@undisclosed.example.com) — 2021-11-23T09:55:52+00:00

Overview All sorts of pages related to OE/YP. OUTLINE (pages to come) Tools toaster wic bmaptool Testing/analysis/utility routines ptest * “inherit ptest” * DISTRO_FEATURES += “ptest” * /usr/lib//ptest * ptest-runner Profiling

zcu102_u-boot_structure

Anonymous (anonymous@undisclosed.example.com) — 2019-12-13T13:14:02+00:00

Overview All of the U-boot (u-boot-xlnx 2019.1) files and content that go into defining a generic Xilinx ZCU102 board (xilinx_zynqmp_zcu102_rev1_0_defconfig). This is based on GitHub repo https://github.com/Xilinx/u-boot-xlnx/tree/xilinx-v2019.1. Files Top level: * Kconfig * config.mk configs: *

zed_machine_conf

Anonymous (anonymous@undisclosed.example.com) — 2019-05-05T16:06:17+00:00

Overview Machine definition files for Zedboard. zedboard-zynq7.conf #@TYPE: Machine #@NAME: zedboard-zynq7 #@DESCRIPTION: Machine support for ZedBoard. (http://www.zedboard.org/) # # For details on the Evaluation board: # http://www.zedboard.org/content/overview # For design files (including 'zynq_fsbl_0.elf') for the ZedBoard: # http://www.zedboard.org/reference-designs-categories/zynq-concepts-tools-and-techniques-zedboard # SOC_VARIANT ?= "7z" require conf/machine/include/tune-z…

zed_sd_card

Anonymous (anonymous@undisclosed.example.com) — 2019-05-18T16:05:56+00:00

Overview Bootable SD card for Zedboard. FAT partition * BOOT.BIN * u-boot.img * uEnv.txt * uImage * zynq-zed.dtb uEnv.txt machine_name=zedboard-zynq7 kernel_image=uImage kernel_load_address=0x2080000 devicetree_image=zynq-zed.dtb devicetree_load_address=0x2000000 bootargs=earlyprintk console=ttyPS0,115200 root=/dev/mmcblk0p2 rw rootwait loadkernel=fatload mmc 0 ${kernel_load_address} ${kernel_image} loaddtb=fatload mmc 0 ${devicetree_load_address} ${devicetree_image} bootkernel=r…

zed_yocto_u-boot_commands

Anonymous (anonymous@undisclosed.example.com) — 2019-05-20T13:05:23+00:00

Overview U-Boot commands supported by the standard Yocto/meta-xilinx-bsp build. Informational commands version U-Boot 2018.01 (May 18 2019 - 17:11:06 +0000) arm-poky-linux-gnueabi-gcc (GCC) 8.2.0 GNU ld (GNU Binutils) 2.31.1.20181224 bdinfo arch_number = 0x00000000 boot_params = 0x00000000 DRAM bank = 0x00000000 -> start = 0x00000000 -> size = 0x20000000 baudrate = 115200 bps TLB addr = 0x1FFF0000 relocaddr = 0x1FF3B000 reloc off = 0x1BF3B000 irq_sp = 0x1EB1AEE0…

zedboard

Anonymous (anonymous@undisclosed.example.com) — 2019-05-19T19:28:36+00:00

Overview Various and sundry info for Digilent/Avnet Zynq-7000-based Zedboard, based on unsupported Fedora 30. Links * Digilent store page * http://zedboard.org/ Yocto Project build Setup Stick with (for now) thud checkout for poky and meta-xilinx-bsp. SCONF_VERSION = "1" SOURCE_MIRROR_URL ?= "file:///home/rpjday/oe/dist/tarballs/" INHERIT += "own-mirrors" BB_GENERATE_MIRROR_TARBALLS = "1" # BB_NO_NETWORK = "1"