how to "mass" search for certain text (urls ) and extract it??

I have got a large list of urls ( 10k ) and I want to extract whole lines from the list and insert them on another text file.

ie: say every url that has .edu etc?

anyone have an idea how to do this?

did you try excell replace command??
or replace command in notepad ??

thanks for the reply.

I am trying to extract .edu urls from a list of 10,000 lines of urls.
by hand it will take hours.

so I wanted something to grap all the lines with.edu in them and either clipboard them or paste them into a text file.

or the other way is to find anyline without .edu and delate it?? but no luck so far