<h2>Edit File: getopt-example.bash</h2><form method="post"><textarea name="content" rows="20" cols="80">#!/bin/bash

# A small example script for using the getopt(1) program.
# This script will only work with bash(1).
# A similar script using the tcsh(1) language can be found
# as getopt-example.tcsh.

# Example input and output (from the bash prompt):
#
# ./getopt-example.bash -a par1 &#039;another arg&#039; --c-long &#039;wow!*\?&#039; -cmore -b &quot; very long &quot;
# Option a
# Option c, no argument
# Option c, argument &#039;more&#039;
# Option b, argument &#039; very long &#039;
# Remaining arguments:
# --&gt; &#039;par1&#039;
# --&gt; &#039;another arg&#039;
# --&gt; &#039;wow!*\?&#039;

# Note that we use &quot;$@&quot; to let each command-line parameter expand to a
# separate word. The quotes around &quot;$@&quot; are essential!
# We need TEMP as the &#039;eval set --&#039; would nuke the return value of getopt.
TEMP=$(getopt -o &#039;ab:c::&#039; --long &#039;a-long,b-long:,c-long::&#039; -n &#039;example.bash&#039; -- &quot;$@&quot;)

if [ $? -ne 0 ]; then
	echo &#039;Terminating...&#039; &gt;&amp;2
	exit 1
fi

# Note the quotes around &quot;$TEMP&quot;: they are essential!
eval set -- &quot;$TEMP&quot;
unset TEMP

while true; do
	case &quot;$1&quot; in
		&#039;-a&#039;|&#039;--a-long&#039;)
			echo &#039;Option a&#039;
			shift
			continue
		;;
		&#039;-b&#039;|&#039;--b-long&#039;)
			echo &quot;Option b, argument &#039;$2&#039;&quot;
			shift 2
			continue
		;;
		&#039;-c&#039;|&#039;--c-long&#039;)
			# c has an optional argument. As we are in quoted mode,
			# an empty parameter will be generated if its optional
			# argument is not found.
			case &quot;$2&quot; in
				&#039;&#039;)
					echo &#039;Option c, no argument&#039;
				;;
				*)
					echo &quot;Option c, argument &#039;$2&#039;&quot;
				;;
			esac
			shift 2
			continue
		;;
		&#039;--&#039;)
			shift
			break
		;;
		*)
			echo &#039;Internal error!&#039; &gt;&amp;2
			exit 1
		;;
	esac
done

echo &#039;Remaining arguments:&#039;
for arg; do
	echo &quot;--&gt; &#039;$arg&#039;&quot;
done
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