[PLUG] Okay after awk I need....

[techmage]

Here's what I'm doing:

I'm taking a line separated list of Usernames and domain names and 
removing the usernames(don't need them)

then I need to remove all the sub domains without removing the master 
domain and extension.

WHAT I can do so far:

I can  gawk -F@ '{print $2}' text.doc >> domain.doc

I was going to use uniq -u at this point, but it's not smart enough to 
differentiate between sub-domains(or I'm not smart enough to figure out 
the proper syntax)

Anyone feel like helping me or, having done this before, parcel thy 
wisdom in my general direction.

It's worth a beer and a copy of my Chili Verde recipe.

Harry