I honestly knew most of this, but I did pick up a few tips that I didn't know; for example, I tend to use grep <whatever> | wc -l Not that it's really harmful

I honestly knew most of this, but I did pick up a few tips that I didn't know; for example, I tend to use grep <whatever> | wc -l Not that it's really harmful or anything, but -c is certainly less keystrokes.