Sane bash script template

script.sh

#!/usr/bin/env bash

set -Ee                               # fail script, if single command fails
set -u                                # unset variables are treated as errors
set -f                                # no filename extension
# set -x                                # verbose mode
set -o pipefail                       # if a subcommand from a pipe fails, the whole pipe fails
trap cleanup SIGINT SIGTERM ERR EXIT  # execute cleanup function at following signals

SOURCE_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)  # location of script
WORKING_DIR=$(pwd -P)  # working directory

cleanup() {
    trap - SIGINT SIGTERM ERR EXIT
    # script cleanup here
    echo "🧹 Time for cleanup"
}

echo "😊 This script is located at '${SOURCE_DIR}'."
echo "😊 This script was exectued from '${WORKING_DIR}'."