System Administration Guide: Advanced Administration

Creating and Editing `crontab` Files (Task Map)

Task	Description	For Instructions
Create or edit a `crontab` file.	Use the `crontab` `-e` command to create or edit a `crontab` file.	How to Create or Edit a `crontab` File
Verify that a `crontab` file exists.	Use the `ls` `-l` command to verify the contents of the `/var/spool/cron/crontabs` file.	How to Verify That a `crontab` File Exists
Display a `crontab`file.	Use the `ls` `-l` command to display the `crontab` file.	How to Display a `crontab` File
Remove a `crontab` file.	The `crontab` file is set up with restrictive permissions Use the `crontab -r` command, rather than the `rm` command to remove a `crontab` file.	How to Remove a `crontab` File
Deny `crontab` access.	To deny users access to `crontab` commands, add user names to the `/etc/cron.d/cron.deny` file by editing this file.	How to Deny `crontab` Command Access
Limit `crontab` access to specified users.	To allow users access to the `crontab` command, add user names to the `/etc/cron.d/cron.allow` file.	How to Limit `crontab` Command Access to Specified Users

Creating and Editing crontab Files (Task Map)