set -Eeuxo pipefail

bash_set

set -Eeuxo pipefail

#  set -e           - Exit immediately if a command exits with a non-zero
#                     status.  Note that failing commands in a conditional
#                     statement will not cause an immediate exit.
#
#  set -o pipefail  - Sets the pipeline exit code to zero only if all
#                     commands of the pipeline exit successfully.
#
#  set -u           - Causes the bash shell to treat unset variables as an
#                     error and exit immediately.
#
#  set -x           - Causes bash to print each command before executing it.
#
#  set -E           - Improves handling ERR signals

---

https://vaneyckt.io/posts/safer_bash_scripts_with_set_euxo_pipefail  
https://www.reddit.com/r/commandline/comments/g1vsxk/comment/fniifmk  
http://redsymbol.net/articles/unofficial-bash-strict-mode