Linux: creating a cron entry

Launches your default editor - most likely vi - and edits your crontab file which ends up in /var/spool/cron/username

crontab -e

I always add this as my first line as I can never remember which order they go in.
#min    hour    daymo   month   daywk   cmd

And now a sample cron entry which will run awstats every day at 6:05am

05     06      *       *       *       /usr/local/awstats/wwwroot/cgi-bin/awstats.pl -update -config=www.website.com

Use the following to list your crontab file
crontab -l