CODEWITHSUNDEEP
bash
Mycha
Mycha

Reputation: 133

Python script won't start via bash

I have this bash script that start the python script ms.py What is the problem here ?

#!/bin/bash
if [ $(ps aux | grep -e 'ms.py$' | grep -v grep | wc -l | tr -s "\n") -eq 0 ]; 
then python /root/folder/ms.py &
fi

and this in my crontab

*/1 * * * * /root/folder/script.sh

When I start the script manually it works normal.

Upvotes: 1

Views: 133

Answers (1)

glenn jackman
glenn jackman

Reputation: 246774

you are testing the output of that pipeline against the number zero. I assume you want to start your python program only if it's not already running:

pid=$(pgrep -f 'ms.py$')
if [[ $pid ]] && kill -0 $pid; then
    echo already running
else
    echo not running
    python /root/folder/ms.py &
fi

Upvotes: 1

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