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To save piles of typing when debugging scripts:

dump () { 
    for var; do
        eval "echo ${var} = \$${var}";
    done
}

Then:

$ dump PATH HOME
PATH = /home/rpjday/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/usr/local/go/bin:/home/rpjday/bin:/home/rpjday/go1.11.4/go/bin
HOME = /home/rpjday