brew cask upgrade

brew_cask_upgrade.sh

#!/bin/bash
red=$(tput setaf 1)
# green=$(tput setaf 2)
reset=$(tput sgr0)

(set -x; brew update;)

for cask in $(brew cask outdated | awk '{print $1}')
do
    echo "${red}update ${cask} ...${reset}."
    # (set -x; brew cask reinstall "$cask";)
    (set -x; brew cask install --force "$cask";)
done

echo "${red}brew clean up ...${reset}"
(set -x; brew cleanup;)
(set -x; brew cask cleanup;)
echo "${red}brew clean up done.${reset}"