Update all Homebrew and Homebrew Cask packages in one command.

brew-update-all.sh

#!/bin/bash
set -eu

set -x
brew update
brew upgrade --all

set +x
brew cask update
for c in `brew cask list`; do
  ! brew cask info $c | grep -qF "Not installed" || brew cask install --force $c
done

set -x
brew cleanup
brew cask cleanup