So, what is the difference between brew and brew cask?
I know that homebrew is a package management software. But what kind of software can I get there? Is it open source software and commercial software?
brew is the core command for the Homebrew project.
The missing package manager for OS X
Homebrew installs the stuff you need that Apple didn’t.
Homebrew typically deals with command line software. Most of the software is distributed under an open source licence. See the Formulas for a list of available installs.
brew prefers pre-compiled binaries but will compile from source in some cases.
brew cask is an extension to brew that allows management of graphical applications through the Cask project.
Homebrew Cask extends Homebrew and brings its elegance, simplicity, and speed to OS X applications and large binaries alike.
Cask deals with a mixture of software and licences. The software I work on is covered by a commercial licence and available via cask.
Cask offers a way to command line manage the installation of graphical applications.
See brew cask issue #7002 about the project's focus on predictability and how that affects the use of pre-compiled binaries or source.
Availability through brew or cask does not imply any specific licence.
brew is for command-line softwares while brew cask is for graphical softwares. cask is used. Why, if pwsh is not a guy? cask is not limited to GUI based applications. Why Microsoft chose cask is a question only answerable by Microsoft. brew instead of brew --cask during installation? In 2021, brew cask was removed. Most of all the old brew cask commands have a --cask modifier for the commands. For example, brew cask install is now brew install --cask, brew cask uninstall is brew uninstall --cask, and so on.
brew cask install foo appears to be a shortcut for brew install caskroom/cask/foo:
ct@MBA45:~$ brew tap caskroom/cask homebrew/core homebrew/php ct@MBA45:~$ brew install meld Error: No available formula with the name "meld" It was migrated from homebrew/core to caskroom/cask. You can access it again by running: brew tap caskroom/cask ct@MBA45:~$ brew tap caskroom/cask ct@MBA45:~$ brew install meld Error: No available formula with the name "meld" It was migrated from homebrew/core to caskroom/cask. You can access it again by running: brew tap caskroom/cask ct@MBA45:~$ brew install caskroom/cask/meld ==> brew cask install caskroom/cask/meld ==> Satisfying dependencies ==> Downloading https://github.com/yousseb/meld/releases/download/osx-9/meldmerge.dmg ######################################################################## 100,0% ==> Verifying checksum for Cask meld ==> Installing Cask meld ==> Moving App 'Meld.app' to '/Applications/Meld.app'. ==> Linking Binary 'Meld' to '/usr/local/bin/meld'. 🍺 meld was successfully installed! ct@MBA45:~$ brew cask install meld Warning: Cask 'meld' is already installed. To re-install meld, run: brew cask reinstall meld
brew caskhas been deprecated in favor ofbrew: brew.sh/2020/12/01/homebrew-2.6.0brew caskcommands now usebrewwith--cask(also hinted at in the linked blog post). See @Epic Programmer's answer for further detail: apple.stackexchange.com/a/449692/175188