set -e inside a Bash script, the hard way.set -e tells a Bash script to exit if any commands return a non-zero exit status (failure). It is important to have this in pre-commit or pre-deploy scripts. Otherwise, you are relying only on the return value of the last command in the script. If any previous command fails, the script returns a success status.
Remember to alwaysset -euo pipefailor else bash will do everything it can to destroy your computer.
-Kevin Fang Video
set -e is full of pitfalls and its behavior apparently changes between versions, making bash more likely to destroy your computer, see mywiki.wooledge.org/BashFAQ/105 || exit (or || return in a function) at the end:meow || exit
nyaa || exit
mrrp || exit
exit and return without an argument abort execution returning the exit code of the previous command, which in an OR chain would be the left side of the operator (you can also write it as e.g. exit 1 to set the error code explicitly). alternatively you can chain all your commands with AND between them, which may be more convenient:meow &&
nyaa &&
mrrp # perhaps add an `|| exit` here
