>> I throught that grep is an overly-complicated way of searching for the
>> location of a string within one particular file? (I usually just use my
>> text editor's "search" function.)
> 
> Does your editor support regular expressions?   Most only support a 
> simple substring search.

Is there some advantage to supporting regular expressions?

I mean, I realise that hypothetically a regex can find things that a 
normal search can't. But in reality, when are you *ever* going to use 
that? What would it be useful for?

> As Warp said, you also can traverse a directory structure with grep to 
> find the file(s) that have the string in them.

I didn't know that. I thought grep was just for searching within one file.

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