Practice

The following example describes how to list out the crontab entries for the user.

# crontab -l krishen

30 10 5 * *      rm /a*

The given example displays in which at the thirtieth minute of the tenth hour of the fifth day of every month and every year, the files whose names starts with "a" under the root will be removed.

For remove the crontab entries for a particular user the next should be used:

Let consider the subsequent example

# crontab -r krishen

The command would remove the crontab entries for the user krishen.

Note:  The   interrupt   character   for   the editor has to be pressed if crontab command   is   accidentally entered without any   option. This permits the user to quit without saving modifying. Exiting the file and saving modification at this point would overwrite an existing crontab file within an empty file.