BASHISM - If you are a civilized person, you'll start all your bash scripts like this

script.sh

#!/usr/bin/env bash

# Undefined variables are errors.
set -euoE pipefail

errcho ()
{
    printf "%s\n" "$@" 1>&2
}

errxit ()
{
  errcho "$@"
  # shellcheck disable=SC2119
  errdie
}

# shellcheck disable=SC2120
errdie() {
  if [ -n "${1:-}" ]; then
    _errmsg="⏩ Error at line ${1} of ${BASH_SOURCE:-${0:-}}"
    if [ -n "${2:-}" ]; then
      _errmsg="${_errmsg} on command '${2}'"
      if [ -n "${3:-}" ]; then
        _errmsg="${_errmsg} in function '${3}'"
      fi
    fi
  fi
  errcho "${_errmsg}"
  echo "🛀" # perform any cleanup
  exit 1
}

intdie() {
  errcho "🍿 script discontinued."
  echo "🛀" # perform any cleanup
  exit 1
}

trap 'errdie ${LINENO} ${BASH_COMMAND:-} ${FUNCNAME:-}' ERR
trap 'intdie ${LINENO} ${BASH_COMMAND:-} ${FUNCNAME:-}' SIGHUP SIGINT SIGTERM