.htaccess cheat sheet

cheat sheet of .htaccess
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1.Unify kavoir.com and www.kavoir.co# Use a 301 redirect from kavoir.com to www.kavoir.com to tell SEs that the 2domains are the same thing so there's no PageRank leakage.
RewriteEngine On
RewriteCond %{HTTP_HOST} ^kavoir\.com [NC]
RewriteRule ^(.*)$ http://www.kavoir.com/$1 [R=301]

2.Block spammers!
# This blocks 218.1.132.177 and *.spammers.com from accessing your site.
<limit GET POST PUT>
order deny,allow
deny from 218.1.132.177
deny from .spammers.com
allow from all
</limit>

3.Change default page!
# The order is followed as specified:
DirectoryIndex default.htm default.php index.html index.php

4.Enable directory browsing!
Options +Indexes
# block a few types of files from showing:
IndexIgnore *.wmv *.mp4 *.avi
Disable directory browsing!
Options All -Indexes

5.Customize error messages!
ErrorDocument 403 /forbidden.html
ErrorDocument 404 /notfound.html
ErrorDocument 500 /servererror.html
6.Get SSI working with HTML/SHTML!

AddType text/html .html
AddType text/html .shtml
AddHandler server-parsed .html
AddHandler server-parsed .shtml

7.Redirect it!
Redirect oldpage.html http://www.domainname.com/newpage.html

8.Block visits or leeches from specific referers!
RewriteEngine on
RewriteCond %{HTTP_REFERER} site-to-block\.com [NC]
RewriteCond %{HTTP_REFERER} site-to-block-2\.com [NC]
RewriteRule .* - [F]

9.Stop a file from being viewed!
# mycontacts.txt cannot be accessed by any means:
<files mycontacts.txt>
order allow,deny
deny from all
</files>

10.Password-protect a directory!
See http://thejackol.com/scripts/htpasswdgen.php