Can't find file with python script when run via cron

Question

I have an automated script - I mean, it runs every 10 minutes by a cronjob. The weird thing is: The file is always found and runs through it when I start the script by hand. But it gives me a lot of troubles when it runs by cron job.

these are the rights of the files:

-rw-r--r-- 1 dataloader users     181 Dec 19 12:37 Foo.after
-rwxr-xr-x 1 dataloader users   26098 Feb 16 20:56 loader.py

this is an abstract of loader.py where it checks for Foo.after:

if os.path.exists(self.customer+'.after'):
            print 'customer file exists'
            f = open(self.customer+'.after')

Most likely the script isn't running in the directory you think it is inside the cron job — Mat
– Mat, Commented Feb 16, 2012 at 20:16

hexparrot · Accepted Answer · 2012-02-16 20:24:29Z

10

The cronjob is not executing in the same directory/environment as the script.

You can address this by adjusting your cronjob:

* * * * * cd /home/yourdir; ./loader.py

OR

* * * * * /home/mc/dotasks.sh

dotasks.sh contains:

cd /home/yourdir
./loader.py
#anything else you need to do

answered Feb 16, 2012 at 20:24

hexparrot

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Varada · Accepted Answer · 2013-03-18 12:22:58Z

0

First check the environment configured for cron, you can dump it as a cron job itself. * * * * * env > /yourcompletepath/envtxt Now look for python version. Does it match. Look for PWD value. From here you can cd to your working folder and then use python to start your file. Ensure that the python file is terminated properly, without any blank spaces near EOF.

answered Mar 18, 2013 at 12:22

Varada

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