How to report back the EXIT code of a multi program script?

Asked Dec 04 '19 at 10:11

Active Dec 04 '19 at 10:21

Viewed 21 times

On a linux shell I have essentially the following script

#!/usr/bin/env bash
set -e

python script.py arg1 &
python script.py arg2 &
python script.py arg3 &
wait
echo $?

in which some python programs can run in parallel, and I wait until the completion of the programs.

However, when I have only one failing programm for testing purposes which fails, the reported exit status is 0 (SUCCESS). I suspect that is the exit status of the wait command. That is not what I want. I want to report an error (i.e. exit status unequal zero), if ANY of the programs did fail.

Is there a simple way to achieve this?

edited Dec 04 '19 at 10:21

asked Dec 04 '19 at 10:11

Alex

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Can't you capture the exit status of each command? – stephanmg Dec 04 '19 at 10:13
It will be like 10 commands in the end. But well I guess I have no choice. And how to do that? – Alex Dec 04 '19 at 10:16
I think you can play around with `$!` which is the background PID. – stephanmg Dec 04 '19 at 10:19
Maybe an easier solution is to make a change to the script (it is actually the same script called with different arguments) which change a variable/ write to a file? – Alex Dec 04 '19 at 10:20
`parallel python script.py ::: arg1 arg2 arg3 || echo one failed` – Ole Tange Dec 07 '19 at 00:15

How to report back the EXIT code of a multi program script?

0 Answers0