Tiny try/catch bash functions

trycatch.sh

#!/bin/bash

# Refer https://stackoverflow.com/a/25180186/3180052 for usage and credits

function try()
{
    [[ $- = *e* ]]; SAVED_OPT_E=$?
    set +e
}

function throw()
{
    exit $1
}

function catch()
{
    export ex_code=$?
    (( $SAVED_OPT_E )) && set +e
    return $ex_code
}

function throwErrors()
{
    set -e
}

function ignoreErrors()
{
    set +e
}

You can load this in your shell or CI/CD with ("long" form, I know it can be a single line)

URL=https://gist.githubusercontent.com/.../trycatch.sh # TODO: Replace with the right URL, by the "Raw" button
eval "$(curl "$URL")"

and then you can write something like:

...
try
(
  # Code that may throw an error
)
catch || {
  # Handle the error - Available here in $ex_code
  ...

  # Optional: You can rethrow the "exception" causing the script to exit if not caught
  throw $ex_code 
  ...
}