func_help() {
    if [ -n "$1" ] && [ "$1" != '' ]; then
	echo "$0: unrecognized option \`$1'
	Try \`$0 --help' for more information."
	exit 1
    fi

    # Normal output
    cat <<- EOF
    Usage: $0 [-all]
    Backup files from a specified list.

    EOF
}