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killing commands in a pipe?
- X-seq: zsh-users 2386
- From: Dominik Vogt <dominik_vogt@xxxxxx>
- To: zsh-users@xxxxxxxxxxxxxx
- Subject: killing commands in a pipe?
- Date: Mon, 14 Jun 1999 12:12:16 -0600
- Mailing-list: contact zsh-users-help@xxxxxxxxxxxxxx; run by ezmlm
- Reply-to: dominik.vogt@xxxxxx
I have a problem with a shell script:
#!/usr/bin/zsh
setopt NOHUP
some_command_that_never_exits |
while true; do
read LINE
...
done
I start the script from another script with
my_script &
and I try to kill it with
killall some_command_that_never_exits
The problem is that although some_command_that_never_exits is
killed as expected, the 'while' part of the pipe doesn't exit.
Actually it's worse than that because the zsh running the command
refuses to be killed, even with kill -9. If I unset the NOHUP
option instead:
unsetopt NOHUP
it works ok. The manpage says this about the (NO)HUP option:
HUP Send the HUP signal to running jobs when the shell exits.
So this doesn't explain the behaviour. Shouldn't the pipe exit
completely when the input stream is broken, regardless of the
HUP/NOHUP option?
I am using zsh 3.0.5 u'on a Linux 2.2.5 kernel.
(please cc me, I'm not on the list)
Bye
Dominik ^_^
--
Dominik Vogt, Hewlett-Packard GmbH, Dept. BVS
Herrenberger Str.130, 71034 Boeblingen, Germany
phone: 07031/14-4596, fax: 07031/14-3883, dominik_vogt@xxxxxx
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