This will simply remove links present in the second file from the first.
If the second file contains domain:example.com then all links in first input having the domain name of example.com will be removed.
Please see URL's are case sensitive and are automatically sorted
There is another compression takes place in each file: if in file1 (or file2) contains both lines like these:
domain:example.com http://example.com/page1.htm
Then the second line is automatically removed before processing the file further.
First go to this page and login
Then visit remove links here.