Template

(Message goes here, use code and foo wisely)

Problematic code:

# Simple example of problematic code

Correct code:

# Simple example of above code, only fixed

Rationale:

(An explanation of why the code is problematic and how the correct code is an improvement)

Exceptions:

(Cases where the user may choose to ignore this warning, if any.)

Other resources:

(BashFAQ entry, StackOverflow duplicate, man pages, POSIX docs, etc)