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    <p>The example packaged with <code>getopt</code> (my distro put it in <code>/usr/share/getopt/getopt-parse.bash</code>) looks like it covers all of your cases:</p> <pre><code>#!/bin/bash # A small example program for using the new getopt(1) program. # This program will only work with bash(1) # An similar program using the tcsh(1) script language can be found # as parse.tcsh # Example input and output (from the bash prompt): # ./parse.bash -a par1 'another arg' --c-long 'wow!*\?' -cmore -b " very long " # Option a # Option c, no argument # Option c, argument `more' # Option b, argument ` very long ' # Remaining arguments: # --&gt; `par1' # --&gt; `another arg' # --&gt; `wow!*\?' # Note that we use `"$@"' to let each command-line parameter expand to a # separate word. The quotes around `$@' are essential! # We need TEMP as the `eval set --' would nuke the return value of getopt. TEMP=`getopt -o ab:c:: --long a-long,b-long:,c-long:: \ -n 'example.bash' -- "$@"` if [ $? != 0 ] ; then echo "Terminating..." &gt;&amp;2 ; exit 1 ; fi # Note the quotes around `$TEMP': they are essential! eval set -- "$TEMP" while true ; do case "$1" in -a|--a-long) echo "Option a" ; shift ;; -b|--b-long) echo "Option b, argument \`$2'" ; shift 2 ;; -c|--c-long) # 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 "$2" in "") echo "Option c, no argument"; shift 2 ;; *) echo "Option c, argument \`$2'" ; shift 2 ;; esac ;; --) shift ; break ;; *) echo "Internal error!" ; exit 1 ;; esac done echo "Remaining arguments:" for arg do echo '--&gt; '"\`$arg'" ; done </code></pre>
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    1. POAn example of how to use getopts in bash
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    1. USBrian Cain
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      1. VTUpMod
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    1. COThe external command getopt(1) is never safe to use, unless you *know* it is GNU getopt, you call it in a GNU-specific way, *and* you ensure that GETOPT_COMPATIBLE is not in the environment. Use getopts (shell builtin) instead, or simply loop over the positional parameters.
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      1. USGilles Quenot
    2. CO@sputnick, tyvm, didn't know this.
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