migrate-cask.sh

#!/bin/bash

OLD_CASK_PATH="/opt/homebrew-cask/Caskroom"
NEW_CASK_PATH="/usr/local/Caskroom"
APP_DIRS=( "$HOME/Applications" "/Applications" )

mkdir -p $NEW_CASK_PATH
chown -R `whoami`:staff $NEW_CASK_PATH

for app_dir in "${APP_DIRS[@]}"; do
    for app in $app_dir/*.app; do
        linked_dir="`readlink "$app"`"

        if [[ -d "$linked_dir" && "$linked_dir" =~ "$OLD_CASK_PATH" ]]; then
            naked_path="${linked_dir#$OLD_CASK_PATH/}"
            app_name="${naked_path%%/*}"
            new_path="$NEW_CASK_PATH/$naked_path"

            echo "Moving $app_name..."
            mv "$OLD_CASK_PATH/$app_name" "$NEW_CASK_PATH/$app_name"

            echo "Relinking $app_name..."
            ln -sf "$new_path" "$app"
        fi
    done
done