a template for bash scripts

template.sh

#!/usr/bin/env bash
# source: https://dev.to/thiht/shell-scripts-matter
set -euo pipefail
IFS=$'\n\t'

readonly LOG_FILE="/tmp/$(basename "$0").log"
info()    { echo "[INFO]    $*" | tee -a "$LOG_FILE" >&2 ; }
warning() { echo "[WARNING] $*" | tee -a "$LOG_FILE" >&2 ; }
error()   { echo "[ERROR]   $*" | tee -a "$LOG_FILE" >&2 ; }
fatal()   { echo "[FATAL]   $*" | tee -a "$LOG_FILE" >&2 ; exit 1 ; }


cleanup() {
    # ...
}

trap cleanup EXIT