Using .htaccess files lets you control the behavior of your site or a specific directory on your site. For example, if you place an .htaccess file in your root directory, it will affect your entire site (www.coolexample.com). If you place it in a /content directory, it will only affect that directory (www.coolexample.com/content).
.htaccess works on our Linux servers.
Using an .htaccess file, you can:
.htaccess files are a simple ASCII text file with the name .htaccess. It is not an extension like .html or .txt. The entire file name is .htaccess. For more information on how to set up .htaccess files, visit Apache's website.
NOTE: Make sure you create an .htaccess file using a plain text editor that doesn't use word wrap. Some editors (such as MS Word or Notepad with Word Wrap enabled) will insert special ASCII codes to signify a line break. Your .htaccess file will not work if it has these special characters in it.