update brew cask install to brew install --cask 
update brew cask install to brew install --cask 

For MacOS in 2021:
brew cask install is no longer valid and has since been replaced with brew install --cask 

check https://brew.sh
rcordovano/autopsy,rcordovano/autopsy,rcordovano/autopsy,rcordovano/autopsy,rcordovano/autopsy,rcordovano/autopsy