Current Brew Version
returns the current version of brew you are using
List Homebrew Packages
Shows all the packages installed by brew.
Update Brew
Updates your brew package manager
Update Brew Packages
Updates All Packages installed by Brew
Update Brew Package
Updates a specific package installed by Brew
Hold package Upgrades
Prevents that package from being updated
Unhold Package Upgrades
unpins the package from being updated
Clean Up Old Versions of package
uninstalls old versions of that package (brew does not automactically uninstall old versions)
Show Clean Up List Before
Shows the packages that would be cleaned up in ther terminal
Clean Up All Old Packages Versions
Uninstalls old versions of every package (brew does not automactically uninstall old versions)