From: Roland Dreier <rdreier@cisco.com>
To: Sam Ravnborg <sam@ravnborg.org>
Cc: David Brownell <david-b@pacbell.net>, linux-kernel@vger.kernel.org
Subject: Re: [patch 2.6.23-git] toplevel Makefile/depmod bugfix
Date: Fri, 19 Oct 2007 22:44:46 -0700 [thread overview]
Message-ID: <ada6412bar5.fsf@cisco.com> (raw)
In-Reply-To: <20071020053642.GA4535@uranus.ravnborg.org> (Sam Ravnborg's message of "Sat, 20 Oct 2007 07:36:42 +0200")
> Accoding to man bash "==" is used to test for equality and "=" is used for assignmnet.
> I assume the above is a dash syntax error (dash is default on ubuntu IIRC).
My bash man page says the following under "CONDITIONAL EXPRESSIONS":
string1 == string2
True if the strings are equal. = may be used in place
of == for strict POSIX compliance.
This is bash 3.1 as packaged by Debian.
So I think "=" is the correct thing to use for compatibility with dash
or other non-bash shells, since as far as I know, there are no
situations where a comparison with "=" will fail but "==" will succed.
(ie "=" is strictly more compatible).
- R.
next prev parent reply other threads:[~2007-10-20 5:45 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-20 4:42 [patch 2.6.23-git] toplevel Makefile/depmod bugfix David Brownell
2007-10-20 5:36 ` Sam Ravnborg
2007-10-20 5:44 ` Roland Dreier [this message]
2007-10-20 5:52 ` David Brownell
2007-10-20 13:06 ` Sam Ravnborg
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