Here’s a simple cheat sheet for regular people whose lives don’t revolve around Brew, but want to use Brew every once in a while to install and update software.
Install Xcode Command Line Tools
xcode-select --install
Find out what’s wrong with your installation
brew doctor
Update brew. Should be run once every 24 hours
brew update
Upgrade all packages
brew upgrade
List all packages
brew list [--versions]
List all outdated packages
brew outdated
Upgrade specific package
brew upgrade [package]
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