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Old 07-18-2006, 10:28 PM   #1
idoneous
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Registered: Jul 2006
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Bash Question: Need PID of sub script at launch


Hello all! I have been 16 years absent from computing. I have a bash script that launches another bash script. I need the parent script to find and assign the the process ID of the child script to a variable for later control. I can't for the life of me remember how to obtain it "scriptomatically". Any and all memory jogging suggestions would be much appreciated.
tiav from an old fart,
idoneous
 
Old 07-18-2006, 11:38 PM   #2
druuna
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Hi,

The following special parameter will give you just that:

$! Expands to the process ID of the most recently executed background (asynchronous) command.

Hope this helps.
 
Old 07-18-2006, 11:42 PM   #3
Matir
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As an example:
Code:
#!/bin/bash

start_new_program.sh &
CHILD=$!
sleep 10

#kill child, it's had 10 seconds
kill $CHILD
 
Old 07-19-2006, 01:19 PM   #4
idoneous
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Says Lucy to Schroeder: That's It!!

druuna and matir,
Thanks! That is exactly what I was looking for. Works like a charm.
 
Old 07-19-2006, 04:35 PM   #5
Matir
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I'm glad it works for you. Let us know if there's anything else we can do to help.
 
  


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