Bash Courses
Packt via FutureLearn Learning Bash Scripting
LinkedIn Learning Ditch Your Git GUI: Customize Terminal
LinkedIn Learning Learning Linux Shell Scripting
LinkedIn Learning The System Administrator’s Guide to Bash Scripting - NEW 2020
A Cloud Guru The System Administrator's Guide to Bash Scripting
A Cloud Guru Bash
Exercism BashGuide
Independent Introduction to Bash, VIM & Regex
Frontend Masters Manipulating strings in bash
egghead.io