CODEWITHSUNDEEP
pythonshellkeyboard-shortcuts
jMML
jMML

Reputation: 23

Execute shell scripts based on value of key pressed

How can I execute different shell scripts (tes1.sh, test2.sh, ..) based on different keyboard events using python.

If user press "1" execute test1.sh if "2" test2.sh and etc.

I got pressed key using "raw-input" and based on the input value I have called "test1.sh" or "test2.sh" using subprocess.call.

How can I stop running current shell script and run new one if different key is pressed.

Upvotes: 2

Views: 1158

Answers (2)

Amar Kalabić
Amar Kalabić

Reputation: 898

Using subprocess.call (according to my knowledge of python docs) is not good idea here because you want to kill (stop) that process after key press... It's better to use subprocess.Popen here, because it doesn't blocks interaction with process while it's running. Subprocess.call waits for program to complete and then returns a code representing the process exit status. To call and kill process, you can do something like this:

import os
import signal
import subprocess

process = subprocess.Popen('script.sh', stdout=subprocess.PIPE, 
                   shell=False, preexec_fn=os.setsid) 

os.killpg(process.pid, signal.SIGTERM)

I hope this helps you, if you don't understand something, feel free to ask in comments...

P.S. If you don't know how to check for key press take a look at this part of docs:

https://docs.python.org/2/faq/library.html#how-do-i-get-a-single-keypress-at-a-time

Upvotes: 0

Kasravnd
Kasravnd

Reputation: 107297

You can use subprocess.call and raw_input() for python2 and input in python3: 

import subprocess
num=raw_input('print the number : ')

if num=='1' :
   subprocess.call('test1.sh')
elif num == '2':
   subprocess.call('test2.sh')

Upvotes: 1

Related Questions