I am having trouble writing a REGEX for my grep command. I have a bunch of html pages that need to be searched to find all youtube.com links. More importantly, I only need those youtube links that don't end with rel=0. 
For example:
http://www.youtube.com/(something)_rel=0    [i have a regex for this]
http://www.youtube.com/(something)          [i need this one]
Is this possible?
 
     
    