Hide echo from apt-get in python

Question

How can i hide the process of installing java (apt-get openjdk-6-jre) when it's runned in python? So i can replace it with "Installing Java..." till it's ready.

Thanks in advance.

possible duplicate of Suppressing output of module calling outside library — Ignacio Vazquez-Abrams
– Ignacio Vazquez-Abrams, Commented Apr 12, 2011 at 14:41
You use subprocess or something like that to spawn a new process? If yes, just execute <command_here> >/dev/null 2>&1 and print whatever you want. — khachik
– khachik, Commented Apr 12, 2011 at 14:42

jfs · Accepted Answer · 2011-04-12 15:50:28Z

2

Here's an implementation of @khachik's comment:

import os
from subprocess import STDOUT, check_call

check_call(['apt-get', 'install', 'openjdk-6-jre'], 
           stdout=open(os.devnull,'wb'), stderr=STDOUT)

It raises an exception in case of an error.

answered Apr 12, 2011 at 15:50

jfs

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jtniehof · Accepted Answer · 2011-04-12 14:54:12Z

1

proc = subprocess.Popen('apt-get install openjdk-6-jre', stdout=subprocess.PIPE,
                        stderr=subprocess.PIPE)
output, errors = proc.communicate()
return_Value = proc.returncode

This puts the program output into a string in Python, where you should probably check it for errors. See subprocess docs. (Unlike the redirect to /dev/null, this is cross-platform.)

answered Apr 12, 2011 at 14:54

jtniehof

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1 Comment

jfs Over a year ago

os.devnull is cross-platform.

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