Grep lines in a file where email matches a given MX.
pip install grepmxLets say you have a CSV file with user information, e.g.
firstname,surname,email,city Michelle,Shelly,michelleshelly@yahoo.com,Kearny Daniel,Boone,danielboone@gmail.com,New York Michael,Fletcher,michaelfletcher@yahoo.co.jp,St Anne Maria,Sauer,mariasauer@rocketmail.com,Arlington Maryjane,Porter,maryjaneporter@aol.com,Southfield
and you want to find all lines with a yahoo MX, the command would be:
grepmx -m .yahoodns.? -m .yahoo.co.jp users.csvthe output is then all but the gmail.
To explain a bit what goes on with .yahoodns.?:
- The starting dot means yahoodns and any subdomain e.g. mx-aol.mail.gm0.yahoodns.net. but not otheryahoodns.net
- The ending questionmark tries to match on TLD, e.g. yahoodns.org or yahoodns.net
Multiple patterns can be used by using multiple -m arguments.
MIT, see LICENSE