You don’t have to look hard on the internet to find plenty of useful one-liners in bash, or scripts. And there are guides to bash that seem somewhat intimidating through either their thoroughness or their focus on esoteric detail. Here I’ve focussed on the things that either confused me or increased my power and productivity in bash significantly, and tried to communicate them (as in my book) in a way that emphasises getting the understanding right.

source: L