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Re: bug when 'cd ..' to a directory who's parent has been deleted


From: Linda Walsh
Subject: Re: bug when 'cd ..' to a directory who's parent has been deleted
Date: Mon, 08 Feb 2016 08:34:35 -0800
User-agent: Thunderbird



Chet Ramey wrote:
On 2/8/16 9:59 AM, Andreas Schwab wrote:
Chet Ramey <address@hidden> writes:

`cd ..' should fail, since the parent no longer exists, and the pathname
canonicalization should fail, since there's presumably no longer a valid
path to reach the current directory.  No value for $PWD is correct.
${PWD%/*} would be a reasonable value.  FWIW, this is what ksh uses in
this case, it doesn't fail.

Why would that be more reasonable than anything else?  It references a
path that doesn't exist.

Um...Not exactly.  As long as there's a handle open to the previous path,
it still exists (at least on linux and unix).





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