Run in parallel from bash

Question

I have this bash script:

#!/bin/bash
for i in `seq 1 10`; 
do
    ./Hysto file$i.txt  
done

I am completely new to parallel programing and even bash language but i meant by this code to run 10 jobs in parallel (I have more than 10 cores available). The program in meant to save data to some files (which don't depend on each other). However in the folder where the files are supposed to be created they appear one by one (the output of file1.txt, then file2.txt and so on), so I assume they are not run in parallel. Can you tell me how can I write a bash file so I can run my jobs in parallel?

Perhaps run them in the background with &? – Shaun Ramsey Jul 30 '16 at 10:07 — Shaun Ramsey, Jul 30 '16 at 10:07
@ShaunRamsey Do you mean put & after ./Hysto file$i.txt ? – Silviu Jul 30 '16 at 10:09 — Silviu, Jul 30 '16 at 10:09

score 2 · Accepted Answer · edited Jul 30 '16 at 15:12

2

All you need to do to run in parallel in bash is to put an & at the end of your command. Here you'd put it after .txt.

See also: How do you run multiple programs in parallel from a bash script.

edited Jul 30 '16 at 15:12

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answered Jul 30 '16 at 10:13

Shaun Ramsey

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Run in parallel from bash

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