set and unset in debug bash script

set-x = print actual shell command

set -f = disable filename expansion [ ls *.yml ]

errexit = fails all script if any exit code arrives

pipefail = Failes multi Pipe statement if any false statement

set -x -f -o errexit -o pipefail

set +x +f +e

https://stackoverflow.com/questions/68465355/what-is-the-meaning-of-set-o-pipefail-in-bash-script

What Does Bash “set -x” do?

https://www.newline.co/courses/newline-guide-to-bash-scripting/errexit

https://unix.stackexchange.com/questions/333867/what-does-set-f-in-korn-shell-do