Programming

OPTIND=0
while getopts ":pq:" OPT
do
    case "$OPT" in
        "p")    echo "Option $OPT is specified" ;;
        "q")    echo "Option $OPT has value $OPTARG"    ;;
        "?")    echo "Unknown option $OPTARG"   ;;
        ":")    echo "No argument value for option $OPTARG" ;;
        *)  echo "Unknown error while processing options"   ;;
    esac
    echo "OPTIND is now $OPTIND"
done
shift $((OPTIND-1)) # This is necessary to set the parameters to what follows the options
FileList="$@"     # File1="$1"; File2="$2" etc.
# or FileList=( "$@" ) # if you want an indexed array.

#!/bin/bash
for P in "$@"; do   # read alle the parameters on command line
   case $P in
      -*)   Param=${P:1}   ;;   # This sets Param to 'files' or 'exclude' (given on the command line)
      *)    eval "$Param+=\"$P \""  ;;  # This adds the command line param to Param (which should have been set before via command line)
   esac
done
echo "Files are '$files'"
echo "Excluded are '$exclude'"