Double Shot #2076

Bash Scripting Tutorial - Online course to teach you the basics.
The Missing Ruby Reference - An attempt to pull together relevant documentation into a coherent whole.
Rails 5.2.0 FINAL: Active Storage, Redis Cache Store, HTTP/2 Early Hints, CSP, Credentials - Came out last week, actually. I've just been behind.
Awesome macOS open source applications - There are more of them than you might think.