brew cask upgrade

brew-cask-upgrade.sh

#!/bin/bash                                                                                                                                                                                       [0/0]
set -Ceu

for c in $(brew cask list); do
    info=$(brew cask info $c)
    installed_ver=$(echo "$info" |awk 'NR==1' |cut -d" " -f 2)
    current_ver=$(echo "$info" |awk 'NR==3' | cut -d" " -f 1 | rev |cut -d"/" -f 1| rev)
    if [ "$current_ver" == "latest" ]; then
        echo "$c is installed '$installed_ver', current is '$current_ver'"
        echo -n "upgrade?[y/n]>"
        read INPUT
        if [ $INPUT == "y" -o $INPUT == "Y" ]; then
          brew cask reinstall $c
        else
          echo "skip upgrade"
        fi
    elif [ "$installed_ver" != "$current_ver" ]; then
        echo "$c is installed '$installed_ver', current is '$current_ver'"
        brew cask reinstall $c
    fi
done