_brew

brew

source: https://stackoverflow.com/questions/31968664/upgrade-all-the-casks-installed-via-homebrew-cask
brew upgrade --cask

# However this will not update casks that do not have versioning information (version :latest) or applications that have a built-in upgrade mechanism (auto_updates true). To reinstall these casks (and consequently upgrade them if upgrades are available), run the upgrade command with the --greedy flag like this:

brew upgrade --cask --greedy

# To get outdated:

brew outdated --cask --greedy --verbose

## to update all packages

brew upgrade

## searching for a cask

brew search --cask firefox