16 great .htaccess Tricks and Hacks ~ SoftwareRoxer

As a configuration file .htaccess if a very powerful and a slight syntax error can result in a severe malfunction of your server. So to avoid that always try to keep a backup copies of all your files from the server before working with the .htaccess file.
(Link: 16 great .htaccess Tricks and Hacks ~ SoftwareRoxer)