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Re: portable way to trap SIGCHLD?

From: Paul Eggert
Subject: Re: portable way to trap SIGCHLD?
Date: Sat, 29 Jan 2005 00:21:13 -0800
User-agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3 (gnu/linux)

Eric Blake <address@hidden> writes:

> Are there any systems where there are no accessible versions of kill(1)
> which can convert either a single signal name to number, or vice versa?

That ability wasn't in 7th Edition Unix.  It's fairly universal now,
but I dunno about some of the older systems like Ultrix.  Also, many
older System V Unixes called it SIGCLD instead of SIGCHLD, so there
will be some variance in the name (as opposed to the number).  And
some Unix clones and/or variants don't have the signal at all.

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