Python Script execute commands in Terminal

Question

I read this somewhere a while ago but cant seem to find it  I am trying to find a command that  will execute commands in the terminal and then output the result   For example  the script will be   command  ls -l    It will out the result of running that command in the terminal

User · Answer

Jupyter

In a jupyter notebook you can use the magic function !

!echo "execute a command"
files = !ls -a /data/dir/ #get the output into a variable

ipython

To execute this as a .py script you would need to use ipython

files = get_ipython().getoutput('ls -a /data/dir/')

execute script

$ ipython my_script.py

User · Answer

I prefer usage of subprocess module   from subprocess import call call   ls    -l      Reason is that if you want to pass some variable in the script this gives very easy way for example take the following part of the code  abc   a c call   vim   abc

User · Answer

You could import the  os  module and use it like this     import os os system   DesiredAction

User · Answer

Custom standard input for python subprocess   In fact any question on subprocess will be a good read   https   stackoverflow com questions tagged subprocess

User · Answer

The os popen   is pretty simply to use  but it has been deprecated since Python 2 6  You should use the subprocess module instead   Read here  reading a os popen command  into a string

User · Answer

You should also look into commands getstatusoutput  This returns a tuple of length 2   The first is the return integer   0 - when the commands is successful   second is the whole output as will be shown in the terminal   For ls       import commands     s commands getstatusoutput  ls       print s      gt  gt   0   file 1 nfile 2 nfile 3       s 1  split   n        gt  gt    file 1    file 2    file 3

User · Answer

import os os system  echo  hello world      This should work  I do not know how to print the output into the python Shell

User · Answer

There are several ways to do this   A simple way is using the os module   import os os system  ls -l     More complex things can be achieved with the subprocess module  for example   import subprocess test   subprocess Popen   ping   -W   2   -c    1    192 168 1 70    stdout subprocess PIPE  output   test communicate   0

User · Answer

for python3 use subprocess  import subprocess s   subprocess getstatusoutput f ps -ef   grep python3   print s

[python] Python Script execute commands in Terminal

Jupyter

ipython

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