Ubuntu – Restart a python script every hour or so

cronpython

So I have a python script that I launch in the terminal by just typing the script name (python SCRIPTNAME.py)

I'm just wondering is it possible to make a script or cron job that simply just stops then starts that python script every hour?

Best approach would be via GNU timeout as in

timeout -k 3600 python3 /path/to/script.py

where -k stands for "kill after" and time in seconds.

So to have the script run, terminate and restart every hour, you could do

while timeout -k 3600 python3 /path/to/script; do
   sleep 2
done

where sleep 2 is merely to add small delay before restarting

Alternatively consider using Threading module in Python to schedule the relevant parts of the script instead. See https://stackoverflow.com/a/50537798/3701431

use 0 at place of first * like :

0 */1 * * * cd /home/user/shell-scripts && sh mongo-backup.sh

if you use * it means it will execute every minute.

If you want to set cronjob for every hour, you can do it any of following way:

You can run:

0 * * * * /path/to/script

which reads

On minute 0, each hour, each day of month, each month, each day of the week.

@hourly /path/to/script

0 */1 * * * /path/to/script

An asterisk (*) can be used so that every instance (every hour, every weekday, every month, etc.) of a time period is used.