I need to install some package using apt or rpm, according the OS. I saw the lib "apt" to update or upgrade the system, but it is possible use it to install a single package?
I was trying to use too "subprocess":
subprocess.Popen('apt-get install -y filetoinstall', shell=True, stdin=None, stdout=None, stderr=None, executable="/bin/bash")
But this command shows all process in the shell, I cannot hide it.
You can use check_call from the subprocess library.
from subprocess import STDOUT, check_call
import os
check_call(['apt-get', 'install', '-y', 'filetoinstall'],
stdout=open(os.devnull,'wb'), stderr=STDOUT)
Dump the stdout to /dev/null, or os.devnull in this case.
os.devnull is platform independent, and will return /dev/null on POSIX and nul on Windows (which is not relevant since you're using apt-get but, still good to know)
I use part of each solution:
proc = subprocess.Popen('apt-get install -y FILE', shell=True, stdin=None, stdout=open(os.devnull,"wb"), stderr=STDOUT, executable="/bin/bash")
proc.wait()
Added: stdout and .wait
For this particular task, as an alternative to subprocess you might consider using Fabric, a python deployment tool to automate builds.
This is meant as an addition to Russell Dias's accepted answer. This adds a try and except block to output actionable error information rather than just stating there was an error.
from subprocess import check_call, CalledProcessError
import os
try:
check_call(['apt-get', 'install', '-y', 'filetoinstall'], stdout=open(os.devnull,'wb'))
except CalledProcessError as e:
print(e.output)
Use this to redirect the output to /dev/null:
proc = subprocess.Popen('apt-get install -y filetoinstall', shell=True, stdin=None, stdout=open("/dev/null", "w"), stderr=None, executable="/bin/bash")
proc.wait()
The call to .wait() will block until the apt-get is complete.
subprocess.run()