Filter uninstall all packages installed by Homebrew

#!/bin/bash
# http://redsymbol.net/articles/unofficial-bash-strict-mode/
set -euo pipefail
IFS=$'\n\t'

EXCLUDED_PACKAGES=("package1" "package2" "package3")

while [[ `brew list | wc -l` -ne 0 ]]; do
    for EACH in `brew list`; do
        if [[ ! " ${EXCLUDED_PACKAGES[@]} " =~ " ${EACH} " ]]; then
            brew uninstall --force --ignore-dependencies $EACH
        fi
    done
done