Which command could you use to verify if a crontab file exists for user?

Question

Problem:

Can any one help me?

 

Which command could you use to verify if a crontab file exists for user thobbs?

Answer 1

The correct answer is: crontab -l -u - thobbs
Explanation
To verify that a crontab file exists for a user, use the ls -l command in the /var/spool/cron/crontabs directory. For example, the following output shows that crontab files exist for users jones and smith.
  
Hope this might help you.