set command

• If it encounters a variable that does not exist, it will report an error and stop execution.

set -u
set -o nounset

• Before running the result, output the line of command that was executed.

set -x
set -o xtrace

• Terminate execution after an error occurs.

set -e
set -o errexit

• If the subcommand fails, the entire pipeline command fails, and the script terminates execution.

set -eo pipefail