Scripsit zweije@xs4all.nl (Vincent Zweije)
> || > while [ x"$1" != x ]; do
> || > ...
> I would write [ "${1:+x}" ], or rather even [ "${1+x}" ], distinguishing
> empty and undefined.
Wouldn't work. Most shells (and /bin/['s) are fine with empty
arguments, but some get confused if the first character of the
argument is a dash, such that it can be interpreted as an option.
Hence the 'x' in front.
--
Henning Makholm "And why should I talk slaves' and fools' talk? I
don't want him to live for ever, and I know that he's
not going to live for ever whether I want him to or not."