Cron Bash: can't run bash file with cron

Question

I have a Python script which I run from a pipenv environment.

I want to run that every minute using cron, but I have not been successful and the solutions I could find have not worked for me.

First I tried:

* * * * * cd /home/santiago/flaskpostgres/writeText && pipenv run python3 main.py

But I got nothing.

I tried searching for a solution and a bash file was recommended on several places, so I changed the line to be

* * * * * bash /home/santiago/hello.sh

and wrote a bash file named hello.sh that contains

#! usr/bin/bash
cd /home/santiago/flaskpostgres/writeText
pipenv run python3 main.py

I also changed permissions on hello.sh with

chmod +x hello.sh

but also nothing.

The bash file by itself works, I have tested that in isolation, but cron does not seem to run it.

cron does work, when I tested with this line

* * * * * echo "hello" >> /tmp/test.txt

That worked without a problem, its just this python file i cant get to work

In case its helpful the contents of the python file located at flaskpostgres/writeText/main.py are:

from datetime import datetime

with open('sample.txt', 'a') as file_object:
    # Append 'hello' at the end of file
    file_object.write(f"{datetime.now()} \n")
    # Close the file
    file_object.close()

this is sort of a Dummy python file, the real one I want to schedule its a bit more complex and has several side effects, so I can't run it every time I want to test cron.

The server is running Ubuntu 20.04.3

Answer 1

As the comments mentioned it was indeed a PATH thing.

I updated the path of my bash file to be the same as the one its used when interacting with the shell and it worked