在shell中创建用户cron时出错

Question

I'm using a shell script to deploy my server. I have this line:

crontab -l | { cat; echo "0 0 0 0 0 some entry"; } | crontab -

How can I modify this line to run this cron as a system user called "test"? When I try this:

APPUSER="test"
crontab -u $APPUSER -l | { cat; echo "/10 * * * * somepath/bin/python somepath/cron.py"; } | crontab -

I get this error:

no crontab for test                                                                                  
"-":0: bad minute                                                                                     
errors in crontab file, can't install.    

Where am I going wrong?

Answer 1

I think you must add a * before /10 to make it run every 10 minutes, and add -u $APPUSER to the last crontab call (to add it to $APPUSER's crontab). Something like:

APPUSER="test"
crontab -u $APPUSER -l | { cat; echo "*/10 * * * * somepath/bin/python somepath/cron.py"; } | crontab -u $APPUSER -