#!/usr/bin/env bash lxc() { _LXC="${TARGET:-lxc}" command $_LXC "$@" } lxc_list() { lxc list -c n -f csv,noheader "$@" } usage() { echo "Usage: ${0##*/} [-l vm1,vm2,...]"; exit 1; } main() { while getopts ":l:" opt; do case "${opt}" in l) IFS="," read -r -a LIMIT <<< "$OPTARG" ;; *) usage ;; esac done } main "$@"