After seeing a discussion in steemit.chat I wanted to go back through and add some sources to my old posts. Since this one is too old to edit, I'm leaving them here in a comment.

The man pages for Bash and all of the other commands I've used above appear to cover 100% the stuff that I put in. If you're not on a Linux or *nix system where you can view man pages, the Bash manual is available online.