Grep, Awk, and Sed in bash on OSX

In the last couple days I have been messing around with huge log files on OSX bash (or command-line). I have used grep, awk, and sed to manipulate and rewrites these log files. Here are some commands that I found useful to document for the future. If you have never used these bash tools, this might be useful, especially if you are trying to mess around with files that are really big. I’m going to consider sample log file and explain a couple different things you can do with these tools. I am using these tools on OSX and these commands or one-line scripts will work with any Linux flavor.
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