Run Python Script in VM (Ubuntu) via Cron Job

Question

I have a problem where I want to run (daily at 2pm) a Python code in my VM but the cronjob didn't work as expected.

Here is the code that i tried in crontab -e:

#1    
0 14 * * * /home/try/myf.py
#2
0 14 * * * /home/try/miniconda3/bin/python /home/try/myf.py
#3
0 14 * * * python /home/try/myf.py
#4
0 14 * * * /home/try/miniconda3/bin/python myf.py

All of this code didn't work for me. Can anyone explain or advice me on how to do the code? If possible, how can I check the log of this cronjob?

yes i am. this is the output /home/try/miniconda3/bin/python — AmaniAli
– AmaniAli, Commented Sep 29, 2021 at 6:39
how can i know im a root or not? can u explain.... please... — AmaniAli
– AmaniAli, Commented Sep 29, 2021 at 6:46
if you are logged in on server, your user name should be user@your-server-ip in case of non root user otherwise it should be root@your-server-ip. DON'T PASTE YOUR IP HERE — Vivek Choudhary
– Vivek Choudhary, Commented Sep 29, 2021 at 6:56

Ricky · Accepted Answer · 2021-09-29 07:45:52Z

1

Checklist:

Check cron daemon running ? (ps aux | grep cron) or service cron status Service cron start or restart
check if cron is working ? contab -e and add below line
- - - - ( /bin/date && /etc/echo "cronjob works" ) >> /tmp/file
Then cat /tmp/file

There are other posts explaining checks and tests in detail, refer those

answered Sep 29, 2021 at 7:45

Ricky

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Sergiusz · Accepted Answer · 2021-09-29 16:09:20Z

0

#2 is correct, it works with miniconda3 on ubuntu instance.
Replace the code in myf.py with print('hello world') and try running /home/try/miniconda3/bin/python /home/try/myf.py manually.
If it works, then it's a crontab issue. There's a great troubleshooting guide here.
If it doesn't work, then your miniconda installation is corrupted. Try reinstalling it following these instructions. Remember to close the terminal and re-open it after the installation, otherwise it won't work even if the installation has been successful.

edited Sep 29, 2021 at 16:09

answered Sep 29, 2021 at 9:22

Sergiusz

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