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Starting points

First, there has been much blood spilled discussing how to support optional arguments using getopts – the correct solution is to not do that, as explained in Guideline 7 here. So we won't.

And, second, if the optstring handed to getopts starts with a colon, then getopts uses what is called “silent error reporting”; this appears to be the recommended approach, so we'll stick with that. In short, don't do this:

while getopts ab:c: opt ; do

Do this (note the leading colon):

while getopts :ab:c: opt ; do

Explanation below.

Fleshed out example

... coming soon ...
posix_shell_getpots.txt · Last modified: 2019/09/30 12:16 by rpjday