How to run multiple python scripts from shell one after another

Question

I want to run multiple Python scripts from shell. I used pythonDim.sh script to do the same.

#!/usr/bin/python
/home/path_to_script/dimAO.py
/home/path_to_script/dimA1.py
/home/path_to_script/dimA2.py
/home/path_to_script/dimA3.py

But it's not working. How to write the shell script?

That shebang is wrong; although the script may run Python scripts, it can't itself be executed as Python. — jonrsharpe
– jonrsharpe, Commented Mar 5, 2018 at 8:03
use #!/usr/bin/env bash to run it via a bash shell stackoverflow.com/questions/10376206/… or any other shebang depending on the shell you want to use — Allan
– Allan, Commented Mar 5, 2018 at 8:04
As mentioned above - change the header to bash and start each line by calling python, for example: python /home/path_to_script/dimAO.py — Nir Alfasi
– Nir Alfasi, Commented Mar 5, 2018 at 8:07
I want to run multiple Python scripts from shell - but your #! line says python, not a shell. — cdarke
– cdarke, Commented Mar 5, 2018 at 8:11
is it necessary to add header in python script dimA0.py. and is it necessary to make scripts executable? — Samradnyee
– Samradnyee, Commented Mar 5, 2018 at 8:18

Sharad · Accepted Answer · 2018-03-05 08:23:16Z

7

To run sequentially:

#!/bin/bash
/home/path_to_script/dimAO.py
/home/path_to_script/dimA1.py
/home/path_to_script/dimA2.py
/home/path_to_script/dimA3.py

To run them all in parallel:

#!/bin/bash
/home/path_to_script/dimAO.py &
/home/path_to_script/dimA1.py &
/home/path_to_script/dimA2.py &
/home/path_to_script/dimA3.py &

Use redirection (> or >>) to redirect stdout and stderr, as desired.

answered Mar 5, 2018 at 8:23

Sharad

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1 Comment

Allan Over a year ago

he should call every python script using python <path to python file> and to run in // I would recommend to add nohup in order to avoid that by closing your shell it kills all the processes!!!!

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