Boy oh boy, where to begin with grep. This one took me down a rabbit hole. grep is one of those tools that I feel has always been there; like with ls and cd. It is a command I’ve come to rely on for almost anything I do on the command line. I will say this, grep is powerful, like SUPER powerful. It’s so vast and complex that people have written multiple books about it. So before we dive in, remember that this is an overview. It won’t cover everything, because I cant. But I hope to give you some building blocks to which you can use to build greater things.