-sharp!/bin/bash
ARGS=`getopt -o ab: -l "argv3:,help" -- "$@"`
eval set -- "${ARGS}"
while true;
do
case "$1" in
-a)
echo "i am a"
shift
;;
-b)
echo "i am b, my value is $2"
shift 2
;;
--argv3)
echo "i am argv3, my value is $2"
shift 2
;;
--help)
echo "i am help info"
exit 0
;;
--)
shift
break
;;
*)
echo "Internal error!"
exit 1
;;
esac
done
the above file is saved as test.sh
1.test.sh, and Internal error!
- -- "$@"
$@ represents all the parameter lists.
what does the "$@" here mean?
ARGS=`getopt -o ab: -l "argv3:,help" -- "$@"`
rewrite ARGS= getopt-o ab:-l "argv3:,help"-"$@" to
ARGS=`getopt -o ab: -l "argv3:,help" `