getopt help

darshakraut · #1 (**permalink**) 06-20-2008

Can anybody help me about how to use getopt in shell scripting.

zaxxon · #2 (**permalink**) 06-20-2008

Have you checked the internet search engines for it yet? There are plenty of examples which could not be explained much easier.

darshakraut · #3 (**permalink**) 06-20-2008

checked, but not fully explained and every page has different syntax and usage, so confused little bit.

zaxxon · #4 (**permalink**) 06-20-2008

Code:

while getopts "abc:d" option
do
        case $option in
                a)   echo "Option a" ;;
                b)   echo "Option b" ;;
                c)   echo "Option c with argument $OPTARG" ;;
                d)   echo "Option d" ;;
                \?)  echo "Wrong argument, usage is ...." ;;
                *)   echo "Not expected input, try again!" ;;
        esac
done

Possbile parameters are a, b, c and d. Since there is a colon following to "c", it awaits an argument, for example a name, a filename, whatever, and will store it in $OPTARG.

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