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Date: | Fri, 19 Aug 2005 15:12:35 -0400 |
From: | Christopher Faylor <cgf-no-personal-reply-please AT cygwin DOT com> |
To: | cygwin AT cygwin DOT com |
Subject: | Re: bash test -n && test -z return tru |
Message-ID: | <20050819191235.GA19495@trixie.casa.cgf.cx> |
Reply-To: | cygwin AT cygwin DOT com |
References: | <43062C7F DOT 8010906 AT pooryorick DOT com> |
Mime-Version: | 1.0 |
In-Reply-To: | <43062C7F.8010906@pooryorick.com> |
User-Agent: | Mutt/1.5.8i |
On Fri, Aug 19, 2005 at 03:01:19PM -0400, Poor Yorick wrote: >from reading the bash man pages, I would have thought the -n and -z were >mutually exclusive. Therefore I don't understand this result: > >~>$ [ -n $(which nonexisingfilename 2>/dev/null) ] && [ -z $(which >nonexistingfilename 2&>/dev/null) ] && echo hello >hello >~>$ > >can anyone help explain this? This defaults to [ -n ] && [ -z ] && echo hello I would have expected a syntax error in that case. Regardless of that, however, if you want to actually make this work you need to do something like: [ -n "$(which nonexisingfilename 2>/dev/null)" ] cgf -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
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