From: Andreas Schwab <schwab@linux-m68k.org>
To: Junio C Hamano <gitster@pobox.com>
Cc: Conley Owens <cco3@android.com>, Jeff King <peff@peff.net>,
git@vger.kernel.org
Subject: Re: [PATCH] Fallback on getpwuid if envar HOME is unset
Date: Tue, 21 Aug 2012 20:41:59 +0200 [thread overview]
Message-ID: <m2harwccjs.fsf@igel.home> (raw)
In-Reply-To: <7vzk5ocdg7.fsf@alter.siamese.dyndns.org> (Junio C. Hamano's message of "Tue, 21 Aug 2012 11:22:32 -0700")
Junio C Hamano <gitster@pobox.com> writes:
> Where do shells (e.g. bash and dash) go when you say "cd" without
> parameter when $HOME is unset, for example?
$ bash -c 'unset HOME; cd'
bash: line 0: cd: HOME not set
$ dash -c 'unset HOME; cd'
[no output and cwd not changed]
POSIX says:
If no directory operand is given and the HOME environment variable
is empty or undefined, the default behavior is
implementation-defined and no further steps shall be taken.
Another data point: bash falls back to getpwuid when expanding ~, dash
leaves it alone. (POSIX makes it unspecified.)
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
next prev parent reply other threads:[~2012-08-21 18:42 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-21 1:28 [PATCH] Fallback on getpwuid if envar HOME is unset Conley Owens
2012-08-21 2:30 ` Jeff King
2012-08-21 17:18 ` Conley Owens
2012-08-21 18:22 ` Junio C Hamano
2012-08-21 18:33 ` Conley Owens
2012-08-21 19:22 ` Junio C Hamano
2012-08-21 19:40 ` Jeff King
2012-08-21 18:41 ` Andreas Schwab [this message]
2012-08-21 3:54 ` Junio C Hamano
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=m2harwccjs.fsf@igel.home \
--to=schwab@linux-m68k.org \
--cc=cco3@android.com \
--cc=git@vger.kernel.org \
--cc=gitster@pobox.com \
--cc=peff@peff.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.