Exact expression matches (can't seem to solve this)

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http://www.unix.com – I've seen dozens of similar threads but none seem to match what I'm looking for and I can't seem to make sense of how to do this so any help would be immensely appreciated. I am running a command that generates this output: Mike Smith Mike Smith Alaska Mike Smith Washington Mike Smith Alaska Common Mike Smith Washington State I am trying to just grep "Mike Smith" but I get a match with all the other lines that contain those characters in addition to other words I've tried variations of grep -x -w -o, etc without success. I have also tried sed but I must confess that I do not und (HowTos)