How to check whether crontab is working for CentOS

To check whether Crontab is working, there are a few pointers you may wish to take note:

1. Check the crond service whether it is working

# service crond status
crond (pid  2873) is running...

Or if you prefer to use ps

# ps -ef | grep cron

2. Check your log file.

# tail -20 /var/log/cron

You should see something like this

........... 
Aug 22 00:41:01 yoursever crond[29827]: (root) CMD ("/root/yourscripts.sh" 2> /usr/local/yourscript_rsync/yourscript_rsync.errors > /dev/null)
..........