From: "René Neumann" <lists@necoro.eu>
To: zsh-users@zsh.org
Subject: Implicit killing of subprocesses
Date: Wed, 28 Aug 2013 14:54:32 +0200 [thread overview]
Message-ID: <521DF308.4040106@necoro.eu> (raw)
Hi,
I have a question regarding if and when subprocesses are killed when
exiting a shell script.
My case: I want to pipe the output of a longrunning process (here:
dbus-monitor) through some evaluation. As it does not read from stdin, I
can't simply close it by sending EOF.
When I use
coproc dbus-monitor
while read -p line; do ... done
the dbus-monitor process lurks around after the script finishes
(breaking or returning from the loop).
When I use
dbus-monitor | while read -p line; do ... done
it does not (i.e. it gets killed).
My questions now are:
- Can I build on the process being killed when exiting the loop (in the
second case)? Or does it only work in some cases?
- Is it intentional that coprocs don't get killed and I have to make it
by hand? (Which is hard if you have "coproc dbus-monitor | grep ...", as
$! only holds the grep).
Thanks and regards,
René
next reply other threads:[~2013-08-28 13:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-28 12:54 René Neumann [this message]
2013-08-28 13:02 ` René Neumann
2013-08-28 13:26 ` Peter Stephenson
2013-08-28 13:38 ` René Neumann
2013-08-28 13:47 ` Peter Stephenson
2013-08-28 15:59 ` Bart Schaefer
2013-08-28 16:11 ` Peter Stephenson
2013-08-28 16:27 ` René Neumann
2013-08-29 0:20 ` Bart Schaefer
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