Template for creating shell scripts in Bash

script.sh

#!/bin/bash

# "Bash strict mode" (see http://redsymbol.net/articles/unofficial-bash-strict-mode/)
set -euo pipefail
IFS=$'\n\t'
# Improved "strict mode" (see https://olivergondza.github.io/2019/10/01/bash-strict-mode.html)
trap 's=$?; echo >&2 "$0: Error on line "$LINENO": $BASH_COMMAND"; exit $s' ERR

debug() {
  echo "[$(date +'%Y-%m-%dT%H:%M:%S%z')]: $*" >&2
}

# Useful helper functions (from https://github.com/hashicorp/tfc-getting-started/blob/main/scripts/setup.sh)

info() {
  printf "\r\033[00;35m$1\033[0m\n"
}

success() {
  printf "\r\033[00;32m$1\033[0m\n"
}

fail() {
  printf "\r\033[0;31m$1\033[0m\n"
}

divider() {
  printf "\r\033[0;1m========================================================================\033[0m\n"
}

pause_for_confirmation() {
  read -rsp $'Press any key to continue (ctrl-c to quit):\n' -n1 key
}