On Tue, 12 Sep 2023 09:54:57 +0900 Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx> wrote: > > Shouldn't the above be: > > > > if [ ! -z "${UNMOUNT_DIR}" ]; then > > > > ? > > I think both are good. > What about using '-n' explictly? > > [ -n "${UNMOUNT_DIR}" ] Even better. Heh, I never even knew about that switch :-p -- Steve