From: "Bart Schaefer" <schaefer@brasslantern.com>
To: talley@boulder.Central.Sun.COM (Steve Talley), zsh-users@math.gatech.edu
Subject: Re: exit value of intermediate program in pipe
Date: Sat, 2 May 1998 19:08:31 -0700 [thread overview]
Message-ID: <980502190831.ZM29269@candle.brasslantern.com> (raw)
In-Reply-To: <199805022224.QAA03113@ipecac.Central.Sun.COM>
} foo () {
} /bin/blah | grep -v "foo"
} }
}
} I would like this function to exit with the exit value from the
} /bin/blah process, but it exits with the exit value from grep instead.
You can do this:
foo() {
/bin/blah >>(grep -v "foo")
}
That effectively runs grep in the background and blah in the foreground,
while still connecting them with a pipe. Then you get the exit status of
blah, but with the side effect that the function returns as soon as blah
finishes, without waiting for the grep -- which may not be what you want.
I don't think there's any other way to do this without using a temp file.
foo() {
local outfile=${TMPPREFIX}blah.out
/bin/blah > $outfile
local exitval=$?
grep -v "foo" $outfile
command rm -f $outfile
return $exitval
}
--
Bart Schaefer Brass Lantern Enterprises
http://www.well.com/user/barts http://www.brasslantern.com
next prev parent reply other threads:[~1998-05-03 2:13 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-05-02 22:24 Steve Talley
1998-05-03 0:50 ` Sweth Chandramouli
1998-05-03 1:38 ` Timothy J Luoma
1998-05-03 2:08 ` Bart Schaefer [this message]
1998-05-03 6:17 ` Sweth Chandramouli
1998-05-03 9:30 ` Bart Schaefer
1998-05-03 22:15 ` Sweth Chandramouli
1998-05-04 1:35 ` Bart Schaefer
1998-05-04 4:54 ` Sweth Chandramouli
1998-05-04 9:43 ` Bernd Eggink
1998-05-04 11:42 ` Bart Schaefer
1998-05-04 12:03 ` Bernd Eggink
1998-05-04 15:59 ` Bart Schaefer
1998-05-05 11:39 ` Bernd Eggink
1998-05-05 17:03 ` zsh vs. ksh coproc redirection semantics Bart Schaefer
1998-05-06 10:47 ` Bernd Eggink
1998-05-06 16:00 ` Bart Schaefer
1998-05-07 7:17 ` Zoltan Hidvegi
1998-05-07 8:34 ` Andrew Main
1998-05-07 9:26 ` Bart Schaefer
1998-05-07 9:34 ` Andrew Main
1998-05-07 17:02 ` Zoltan Hidvegi
1998-05-07 9:18 ` Bart Schaefer
1998-05-07 17:10 ` Zoltan Hidvegi
1998-05-05 11:54 exit value of intermediate program in pipe Bernd Eggink
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=980502190831.ZM29269@candle.brasslantern.com \
--to=schaefer@brasslantern.com \
--cc=talley@boulder.Central.Sun.COM \
--cc=zsh-users@math.gatech.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/zsh/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).