Bash Error Handling

go.sh

#!/bin/bash

# Use -e to exit the script as soon as anything returns non-zero
set -eou pipefail


function usage() {
  echo ""
  echo "Template script for bash error handling."
  echo ""
  echo "Usage: ./scaledown"
  echo ""
}


# Define an error handling function
function onerror() {
  
  # Do what you want when catching an error
  exit 0
}
# Tell the script to trigger `onerror` immediantly before exit
trap onerror EXIT

# Whatever you want your script to do
function go() {
  echo "hi"
}

# Call your function
go

# Before a successfull exit, unhook the `onerror` function; otherwise
# it will trigger on exit
trap - EXIT

# Set your exit status
exit 0