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From: Chris Seberino on 10 Jun 2010 00:15
How do subprocess.Popen("ls | grep foo", shell=True) with shell=False?

Does complex commands with "|" in them mandate shell=True?

cs
From: Chris Rebert on 10 Jun 2010 00:48
On Wed, Jun 9, 2010 at 9:15 PM, Chris Seberino <cseberino(a)gmail.com> wrote:
> How do subprocess.Popen("ls | grep foo", shell=True) with shell=False?

I would think:

from subprocess import Popen, PIPE
ls = Popen("ls", stdout=PIPE)
grep = Popen(["grep", "foo"], stdin=ls.stdout)

Cheers,
Chris
--
http://blog.rebertia.com
From: Grant Edwards on 10 Jun 2010 10:04
On 2010-06-10, Chris Seberino <cseberino(a)gmail.com> wrote:

> How do subprocess.Popen("ls | grep foo", shell=True) with shell=False?

You'll have to build your own pipeline with multiple calls to subprocess

> Does complex commands with "|" in them mandate shell=True?

Yes.

Hey, I've got a novel idea!

Read the documentation for the subprocess module:

http://docs.python.org/library/subprocess.html#replacing-shell-pipeline

--
Grant Edwards grant.b.edwards Yow! ... My pants just went
at on a wild rampage through a
gmail.com Long Island Bowling Alley!!
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