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How can a Python program send itself to the background?
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Is it possible for a Python program to send itself in the background?
For example, on Linux you can do nohup some_cmd & and any program will run in the background. Some programs also support switches like -d (daemonize) to run in the background without nohup/&. How can a Python program do this?
1 answer
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Use os.fork().
Example:
import os
import time
pid = os.fork()
if pid == 0:
os.setsid() # Prevents the child from being killed if the parent dies
time.sleep(10)
os.system('some_cmd')
os._exit(os.EX_OK) # This is important after a fork; otherwise Python cleans up its children
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