[CentOS] backup script

Tue Jan 25 07:31:20 UTC 2011
madunix at gmail.com <madunix at gmail.com>

I want to create bash script to have a zip copy from a website running
on linux /var/www/htdocs/* local on the same box on different
I am thinking to do a local backup using crontab (snapshot my web)
tar -cvzf /tmp/website-$(date +%Y%m%d-%H%M).tgz /var/www/htdocs/*
This command will create a file /tmp/website-20110101-1459.tgz
I want it run on daily basis and to keep the last 5days backup on the
box and remove older version than 5days.
Can you point me out.