Question

I have put

set -e
set -u

at the top of my BASH script to make it fail as opposed to going on.

Is there a way for me to specify some code to be run on failure?

---

If there’s no better way, I can make my program a three files:

a
.a
.a_onfail

and have a just be

# headers etc
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
$(DIR)/.a || $(DIR)/.a_onfail

Answer 1

You could try solve this using trap. Eg: trap "ERROR=1" ERR and trap '[ "$ERROR" = "1" ] && on_error' EXIT and then provide a on_error function.