To make a bash script exit after any failed command, you can add
set -e
Imagine, you have a CI agent which allow people to embed bash scripts as tasks in build jobs.
How to make the exit behaviour given by set -e default for all new bash instances? Is there some sort of bashrc hack for that?
You can make the present running bash shell activate the -e option with:
$ set -e
Just to confirm:
$ echo "$-"
himBHs
$ set -e
ehimBHs
As the bashrc file is sourced to interactive shells you can make all new bash shells use the -e option by adding this:
set -e
As one line at any place (that is executed) of the .bashrc script.
This is a very bad idea however, as there are many conditions under which the detection of a failed command fails and there are several cases where a failed command is desirable. Please read
SHELLOPTS=errexitin the environment would do it, but in my opinion and that of manyset -eis almost never the right way to do error handling. – Stéphane Chazelas Feb 01 '18 at 19:56