Multithreading in Bash

linux multithreading bash shell
Kiran picture Kiran · Mar 11, 2010 · Viewed 149.5k times · Source

I would like to introduce multithreading feature in my shell script.

I have a script which calls the function read_cfg() with different arguments. Each of these function calls are independent.

Would it be possible to instantiate these function calls (not scripts) parallelly. Please let me how can we achieve that.. ?

Answer

Martin picture Martin · Mar 11, 2010

Sure, just add & after the command:

read_cfg cfgA &
read_cfg cfgB &
read_cfg cfgC &
wait

all those jobs will then run in the background simultaneously. The optional wait command will then wait for all the jobs to finish.

Each command will run in a separate process, so it's technically not "multithreading", but I believe it solves your problem.

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