Creating a Cron Job - Linux/Python

schedule python script with crontab

First, source activate syntax was deprecated years ago (how old is your Conda instance?) - you should be using conda activate. Second, Conda shell commands are loaded into the shell as part of sourcing .bashrc or .bash_profile. So at the very least, you need to include the -l in the shebang and

#!/bin/bash -l
conda activate py36
python /mnt/data/sda/user_storage/stocks_etl.py

You may need to do something extra to ensure the .bashrc it sources is correct (e.g., what user does it run as?).

Note that Conda also has the conda run command for executing commands inside envs, which I think should be preferred:

#!/bin/bash -l
conda run -n py36 python /mnt/data/sda/user_storage/stocks_etl.py

The latter form should also work without the Conda initialization, but providing the full path to the conda entry point:

#!/bin/bash

# change to match where your `conda` location
/home/user/anaconda3/condabin/conda run -n py36 python /mnt/data/sda/user_storage/stocks_etl.py

Create a cron job for a python file to run on second day each month

All cron tab jobs can be easily created using the command

crontab -e

Then you should input the text you need to schedule. A good way to do this is using the website crontab.guru
In your case, the configuration once you enter at the edition mode with the command above would be something like

0 13 2 * *

This means, run at 1 pm on day-of-month 2

More info: https://crontab.guru/#0_13_2_*_*

How to run a python script with cronjob in Ubuntu / Apache

Change this line

file1 = open("home/username/project/cron_test.txt","a")

to

file1 = open("/home/username/project/cron_test.txt","a")

Creating a Cron Job - Linux / Python

If you have an executable, say /home/bin/foobar, that restarts the script, and want to run it (say) every 10 minutes, the crontab entry needs to be:

*/10 * * * *  /home/bin/foobar

which says to run it at every minute divisible by 10, every hour, every day.

If you save this (and any other periodic jobs you want to run) as, say, /home/bin/mycrontab, then just do crontab /home/bin/crontab and the system will do the rest (the script runs with your userid).

To see what periodic jobs you have already scheduled under the current userid, if any, do crontab -l.

Execute Python script via crontab

Just use crontab -e and follow the tutorial here.

Look at point 3 for a guide on how to specify the frequency.

Based on your requirement, it should effectively be:

*/10 * * * * /usr/bin/python script.py

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