bash command check 2 arguments
if [ $# -lt 2 ]; then
# TODO: print usage
exit 1
fibash command check 2 arguments
if [ $# -lt 2 ]; then
# TODO: print usage
exit 1
fiset multiple values bash
$ read -r a b c <<<$(echo 1 2 3)
$ echo "$a|$b|$c"
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