Original grep was pretty much a wrapper around sed (or actually maybe ed, I don’t remember). That’s why it’s called g/re/p, which is the sed command to do the same thing.

I don’t know if it’s that cut and dry. If you study a Operative Systems class or buy a book about them, it’ll exclusively deal with the kernel.

Are reading what you write? It’s linux so it isn’t?

Or by using gnu style options on potentially bsd tar

If it’s a verb it should be a button, not a toggle

In what way is 0F helpful at all?

I don’t understand this comment. Are you saying it’s only fine to dodge the draft when rock people do it?