linux-kernel - Re: extra slash in current path

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Message-Id: <20110623165206.d88dcbb3.taeuber@bbaw.de>
Date:	Thu, 23 Jun 2011 16:52:06 +0200
From:	Lars Täuber <taeuber@...w.de>
To:	linux-kernel@...r.kernel.org
Subject: Re: extra slash in current path

Am Thu, 23 Jun 2011 18:31:06 +0400
Michael Tokarev <mjt@....msk.ru> schrieb:
> 23.06.2011 18:11, yuyichao-mit wrote:
> 
> >>>> $ cd //
> >>>> $ pwd
> >>>> //
> 
> The current directory is cached in $PWD environment
> variable by shell (bash at least).  This variable is
> checked in glibc (getcwd() et al) - if it is set and
> stat($PWD) is the same as stat("."), that value is used.

It also is somehow cached inside bash/dash for it's built in commands.
$ cd //
$ export PWD=5
$ pwd
//
$ /bin/pwd
/


Regards
Lars
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