Hi there. I made a cron for operating clean_sandbox.py every 6 hours, I made a modified copy from clean_sandbox.py for me and uploaded it to my account on toolserver (outside the pywikipedia folder).
The problem i face is that i can't write the proper code, I made this code:

#!/bin/sh
#$ -j y
#$ -o /dev/null
$HOME
python clean_sandbox.py -lang:"ar" -family:wikipedia

But it didn't work.