Template für bash script

gistfile1.txt

#!/bin/bash

function usage() {
    echo 'Usage: $0 [-o|--option <arg>]'
    exit 2
}

function processCmdLine() {
    while [ -n "$1" ]; do
        case "$1" in
            -o | --option) the_option="$2"; shift; shift;;
	    *) usage && exit 1;;
        esac
    done
    the_option="${the_option:-DEFAULT}"
}

processCmdLine $@