Hello, please help I try to do the following actions via macro but there may be more simple:

A column containing urls
column B containing urls
I'd like urls in column A that also exist in col B are deleted (in col A)
then empty cells in A cause suppression of the corresponding line
Then delete column B
Then I export the remaining column A in a csv file
How could you do that please? using macros or maybe Excel 2013 features advanced functions for this?

thank you very much