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Re: When scripting, which is better?

From: Adrian Phillips <adrianp(at)powertech(dot)no>
To: Justin Clift <justin(at)postgresql(dot)org>
Cc: PostgreSQL Hackers Mailing List <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: When scripting, which is better?
Date: 2001-10-01 15:15:14
Message-ID: 87d747tmrh.fsf@grannyogg.localnet (view raw or flat)
Thread:
Lists: pgsql-hackers
>>>>> "Justin" == Justin Clift <justin(at)postgresql(dot)org> writes:

    Justin> if [ x"$foo" = x"" ]; then

    Justin> or

    Justin> if [ "$op" = "" ]; then

    Justin> or

    Justin> if [ "$foo" ]; then

I'm not the slightest bit a shell expert, but why not :-

if [ -z "$foo" ]; then

Is this POSIX/SUS2/whatever ?

Sincerely,

Adrian Phillips

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