Thanks to all of you for providing such wonderful examples.....
sorry for top posting
Regards
Subhojit Ojha
On Thu, Apr 22, 2010 at 12:19 AM, Mohan R <mohan...@gmail.com> wrote:
> Hi,
>
> And here is the shell code,
>
>
>
> [parseoptions.sh]
> #!/bin/sh
> # script to parse options using getopts
>
> while getopts 'ab:' OPTION
> do
> case "${OPTION}"
> in
> a) echo "-a supplied";;
> b) echo "-b supplied with '${OPTARG}'";;
> *) echo "Wrong option '${OPTION}' supplied";;
> esac
> done
> shift $((OPTIND - 1))
> echo "Remaining Arguments '$...@}'"
>
>
> $ ./parseoptions.sh -a -b apple orange banana
> -a supplied
> -b supplied with 'apple'
> Remaining Arguments 'orange banana'
> $
>
>
>
>
>
> [parseoption.sh]
> #!/bin/sh
> # script to parse options using getopt
>
> PARSEDOPTIONS=$(getopt -o 'ab:' --longoptions 'long-x,long-y,long-z:' --
> "$...@}")
> set -- ${PARSEDOPTIONS}
> while test "${1}" != "--"
> do
> case "${1}"
> in
> -a) echo "-a supplied"; shift;;
> -b) echo "-b supplied with ${2}"; shift 2;;
> --long-x) echo "--long-x supplied"; shift;;
> --long-y) echo "--long-y supplied"; shift;;
> --long-z) echo "--long-z supplied with ${2}"; shift 2;;
> *) echo "Wrong option ${1} supplied"; shift;;
> esac
> done
> shift
> echo "Remaining arguments $...@}"
>
>
> $ ./parseoption.sh -a -b apple --long-x --long-y --long-z orange banana
> -a supplied
> -b supplied with 'apple'
> --long-x supplied
> --long-y supplied
> --long-z supplied with 'orange'
> Remaining arguments 'banana'
> $
>
>
>
> And finally, one of the key difference between these two is, 'getopts' is
> POSIX shell built-in, where 'getopt' is a separate executable living inside
> '/usr/bin/'. Another difference is, 'getopts' cannot parse options like
> '--big-option' whereas 'getopt' can.
>
> I hope above examples will help you to understand getopts and getopt. Its a
> standard practice to parse options inside your shell script using
> getopts/getopt. Please read 'man getopt' and 'man sh'(then search for
> getopts) for reference.
>
> Thanks,
> Mohan R.
>
>
> _______________________________________________
> ILUGC Mailing List:
> http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
>
_______________________________________________
ILUGC Mailing List:
http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
