如何使.htaccess忽略特定的uri部分

I don't know how to make a rewrite condition to obtain the right behaviour.

This is the link i have:

http://www.example.com/variable/Known/Uri/ecc

or

http://www.example.com/variable

I'd like to ignore the "variable" part and consider only the rest of the uri. I will consider "variable" only when reading $_SERVER["REQUEST_URI"].

I think what you want to do is:

RewriteEngine On
RewriteRule ^[^/]+(.*)$ $1 [L]