From: Peter Stephenson <p.w.stephenson@ntlworld.com>
To: zsh-users@zsh.org
Subject: Re: Parallel backupping embedded systems...how?
Date: Tue, 9 Dec 2014 20:31:14 +0000 [thread overview]
Message-ID: <20141209203114.470e80ff@pws-pc.ntlworld.com> (raw)
In-Reply-To: <20141209182415.GB4483@solfire>
On Tue, 9 Dec 2014 19:24:15 +0100
meino.cramer@gmx.de wrote:
> If I put both tar processes into background I dont know
> how to wait correctly for the jobs end to start 7z.
If you have the fix in 33531 this is easy. However, that's after 5.0.7.
process1 &
pid1=$!
process2 &
pid2=$!
wait $pid1
wait $pid2
It doesn't matter if they finish in the wrong order since the shell
remembers the status.
It's less easy before that, but you could use a SIGCHLD trap and the
$jobstates variable from zsh/parameter:
zmodload zsh/parameter
process1 &
process2 &
TRAPCHLD() {
if (( ${#jobstates} == 0 && jobs_started )); then
print Last background job edited, doing something else...
trap -- CHLD
fi
}
pws
next prev parent reply other threads:[~2014-12-09 20:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-09 18:24 meino.cramer
2014-12-09 20:31 ` Peter Stephenson [this message]
2014-12-09 21:12 ` Peter Stephenson
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