#!/bin/bash

# extracting command line options and values

while [ -n "$1" ]
do
    case "$1" in
        -a) echo "Found the -a option" ;;
        -b) param="$2"
        echo "Found the -b option, with parameter value $param"
        shift ;;
        -c) echo "Found the -c option" ;;
        --) shift
        break ;;
        *) echo "$1 is not an option" ;;
    esac
    shift
done

count=1
for param in "$@"
do
    echo "Parameter #$count : $param"
    count=$[ $count + 1 ]
done