cat >/tmp/demo-space-separated.sh <<'EOF'

#!/bin/bash

​

POSITIONAL_ARGS=()

​

while [[ $# -gt 0 ]]; do

  case $1 in

    -e|--extension)

      EXTENSION="$2"

      shift # past argument

      shift # past value

      ;;

    -s|--searchpath)

      SEARCHPATH="$2"

      shift # past argument

      shift # past value

      ;;

    --default)

      DEFAULT=YES

      shift # past argument

      ;;

    -*|--*)

      echo "Unknown option $1"

      exit 1

      ;;

    *)

      POSITIONAL_ARGS+=("$1") # save positional arg

      shift # past argument

      ;;

  esac

done

​

set -- "${POSITIONAL_ARGS[@]}" # restore positional parameters

​

echo "FILE EXTENSION  = ${EXTENSION}"

echo "SEARCH PATH     = ${SEARCHPATH}"

echo "DEFAULT         = ${DEFAULT}"

echo "Number files in SEARCH PATH with EXTENSION:" $(ls -1 "${SEARCHPATH}"/*."${EXTENSION}" | wc -l)

​

if [[ -n $1 ]]; then

    echo "Last line of file specified as non-opt/last argument:"

    tail -1 "$1"

fi

EOF

​

chmod +x /tmp/demo-space-separated.sh

​

/tmp/demo-space-separated.sh -e conf -s /etc /etc/hosts