Added correct code for Bourne shells
cleaned up "Exceptions section
Updated SC2181 (markdown)
missing the `!` in example, see https://github.com/koalaman/shellcheck/issues/782
I accidentally moved this file, lets get it back to where it belongs
Destroyed SC2181 (markdown)
First Draft of SC2181 (so that people will skip Google-fu StackOveflow-isms)
Created SC2181 (markdown)