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I am running my Python program from my ubuntu machine as follows -

root@dbx1145:/home/david/zookteck# python test.py

But if I close my ubuntu machine, then my whole program will get stopped.. Is there any way of running this python program in the background and if I close my terminal then still it keeps on running?

And also after running this program in the background, how do I find out my actual program whether it is still running or not if I am logging back again to that machine?

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marked as duplicate by Seth, Alvar, Avinash Raj, don.joey, Flimm Dec 28 '13 at 22:43

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

See here: askubuntu.com/questions/106351/… should answer your question. Also a possible duplicate. –  RPi Awesomeness Dec 28 '13 at 3:21
And, when you run a program in the background with &, it will print a PID that you can search for with something like ps aux | grep PID. –  Seth Dec 28 '13 at 3:22
@Seth Yes, that puts it in the background, but when the terminal is quit, the program goes away too... –  RPi Awesomeness Dec 28 '13 at 3:23
@Seth: Everytime I do need to remember the PID to look for the process? –  lining Dec 28 '13 at 3:23
@TechGeeky Yes. –  RPi Awesomeness Dec 28 '13 at 3:24

2 Answers 2

up vote 8 down vote accepted

Use the shebang line in your python script. Make it executable using the command,

chmod +x test.py

Use no hangup to run a program in background even if you close your terminal.

nohup /path/to/test.py &

Do not forget to use & to put it in background.

To see the process again, use in terminal,

ps ax | grep test.py
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python test.py &

Will run the file in the background.

In order to find the running program you can use ps -e to list all running programs. You can use grep to find your particular program from the list.

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In this case program will be terminated if you close the terminal, but OP do not want it. –  souravc Dec 28 '13 at 3:32
@souravc Nope, the program will become a child of init --user. At least if you use the gnome terminal. Therefore it will only terminate upon logging out. –  user2049175 Dec 28 '13 at 4:43

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