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test-get-opt.sh
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test-get-opt.sh
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#!/bin/bash
getopt --test > /dev/null
if [[ $? -ne 4 ]]; then
echo "I’m sorry, `getopt --test` failed in this environment."
exit 1
fi
OPTIONS=dfo:v
LONGOPTIONS=debug,force,output:,verbose
# -temporarily store output to be able to check for errors
# -activate advanced mode getopt quoting e.g. via “--options”
# -pass arguments only via -- "$@" to separate them correctly
PARSED=$(getopt --options=$OPTIONS --longoptions=$LONGOPTIONS --name "$0" -- "$@")
if [[ $? -ne 0 ]]; then
# e.g. $? == 1
# then getopt has complained about wrong arguments to stdout
exit 2
fi
# use eval with "$PARSED" to properly handle the quoting
eval set -- "$PARSED"
# now enjoy the options in order and nicely split until we see --
while true; do
case "$1" in
-d|--debug)
d=y
shift
;;
-f|--force)
f=y
shift
;;
-v|--verbose)
v=y
shift
;;
-o|--output)
outFile="$2"
shift 2
;;
--)
shift
break
;;
*)
echo "Programming error"
exit 3
;;
esac
done
# handle non-option arguments
if [[ $# -ne 1 ]]; then
echo "$0: A single input file is required."
exit 4
fi
echo "verbose: $v, force: $f, debug: $d, in: $1, out: $outFile"