help me with url rewriting

[bioshock]

i need to redirect images named with punk.png
to document_root/punk.png

for better explanation

a url of the image is http://www.example.com/subdir/subdir/punk.png it should redirect to
http://www.example.com/punk.png


i have done something but didn't work .

RewriteEngine on

RewriteRule ^dl.png http://example.com/dl.png

[Zubair]

Add this line at TOP of .htaccess file

RewriteBase /”

and see if it works

[misson]

Example URLs should be live. Rather than making up names, give real ones that can be tested.

Also, the location of the .htaccess file with the directives matters. The example you give should be in "[DOCUMENT ROOT]/subdir/subdir/.htaccess". If you want every URL ending with "punk.png" to be redirected, add the following in [DOCUMENT ROOT]/.htaccess:

RewriteRule punk.png$ /punk.png

This also uses an internal redirect. The rewrite isn't visible to the site visitor (which may or may not be desirable) and is more efficient. An external redirect sends a message to the browser that the resource is at a different URL, which then has to issue a second request.

You'll still need the RewriteBase directive under the new virtual host configuration (see how useful it is to read the service alerts?).

[bioshock]

yes i was looking for internal redirect thanks misson would you please explain how it works i mean the syntax

what the $ sign for

[misson]

would you please explain how it works i mean the syntax

What part of the syntax, exactly? You get an external rewrite whenever you include the scheme and host name in the substitution URL, or you use the redirect flag (R). Use neither the flag nor the scheme and you have an internal redirect. Read the rewrite engine documentation for more.

what the $ sign for

The pattern in a rewrite rule is a regular expression. The "$" atom matches the end of a string. Read up on the most basic features of regular expressions to start, then pick a RE tutorial for the rest.