Bash template file

bash-file.sh

#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'
SCRIPT="$(readlink --canonicalize-existing "$0")"
SCRIPTPATH="$(dirname "$SCRIPT")"
SCRIPTNAME="$(basename "$SCRIPT")"
# Thanks https://dev.to/thiht/shell-scripts-matter :)

# set -x if DEBUG env var is set - any value suffice
[ -z "${DEBUG:-}" && set -x

#/ Usage:
#/ Description:
#/ Examples:
#/ Options:
#/   --help: Display this help message
#/   --version: Display programm version
#/ Version: 0.1.0
usage() { grep '^#/' "$0" | cut -c4- ; exit 0 ; }
version() { grep '^#/ Version:' "$0" | cut -c13- ; exit 0 ; }
expr "$*" : ".*--help" > /dev/null && usage
expr "$*" : ".*--version" > /dev/null && version

readonly LOG_FILE="/tmp/$SCRIPTNAME.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() {}

# Parse command line options.
# while getopts ab: OPT; do
#   case "$OPT" in
#     a)
#       echo "set a"
#     b)
#       echo $OPTARG
#       ;;
#     \?)
#       # getopts issues an error message
#       usage
#       exit 1
#       ;;
#   esac
# done
# # Remove the switches we parsed above.
# shift `expr $OPTIND - 1`

if [[ "${BASH_SOURCE[0]}" = "$0" ]]; then
    # trap cleanup EXIT
    # Script goes here
    exit 0
fi