Check Crontab running

# To check that it's running on your system, use ps and grep to locate the process.
 
ps -ef|grep cron
 
root    387      1   0   Jun 29 ?     00:00:00 crond
root  32304  20607   0   00:18 pts/0  00:00:00 grep cron
 
# In the example above, crond is running as process 387. Process 32304 is the grep cron command used to locate crond.