`man bash` is, hands down and by far, the most accurate and complete bash resource. That doesn't mean it's a pleasant or even good read. It's terse, technical

`man bash` is, hands down and by far, the most accurate and complete bash resource. That doesn't mean it's a pleasant or even good read. It's terse, technical and descriptive. It's a users manual, not a textbook, and not a tutorial. But it's complete, explains everything, it's free, comes with bash, and is searchable ;-) I have spent a lot of time in there, usually when debugging or extending old shell scripts.