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Re: tee logs no output if stdout is closed


From: Andreas Schwab
Subject: Re: tee logs no output if stdout is closed
Date: Tue, 01 Jul 2008 00:36:53 +0200
User-agent: Gnus/5.110009 (No Gnus v0.9) Emacs/22.2 (gnu/linux)

Phillip Susi <address@hidden> writes:

> Andreas Schwab wrote:
>> Bruno Haible <address@hidden> writes:
>>
>>> How about adding an option '-p' to 'tee', that causes it to ignore SIGPIPE
>>> while writing to stdout?
>>
>> Just add a trap '' SIGPIPE before starting tee.
>
> Wouldn't that only trap SIGPIPE sent to the shell, not tee?

Ignored signals are inherited.

> Aren't all signal handlers reset on exec()?

Only handled signals.

> It seems to me that tee should have a SIGPIPE handler which closes the
> broken fd and stops trying to write to it, and if ALL outputs have been
> closed, exit.

That would not be compatible with POSIX.

Andreas.

-- 
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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