I am sorting my web logs with a shell script (they're not apache
I want to only track unique
visitors. So I have sorted my logs according to the first field, which is IP address.
Great. Now I want to throw out "duplicate" users. I need advice on how to do this. I know uniq will do this if *the whole line is the same.* But i want to throw a line out only if the first field/ column is the same. The rest of the line can be "unique."