In lamest terms, process substitution allows you to turn a command into a temporary file that banishes after it finishes.
set -o errexitset -o pipefailset -o nounset
errexit
This is one of series of articles written about the book How to Win Friends and Influence People, below…
bash -n
One easy way to check the syntax of your bash scripts is to run bash -n
Conclusion and Review
This is a review and conclusion of the book by Andrew Carnegie, I have written a series of articles outlining the book by applying the principles to DevOps here: