I won't say I can't live without them but here are a few I always do. These require a root shell. Install Xcode command line tools xcode-select --install

I won't say I can't live without them but here are a few I always do. These require a root shell. Install Xcode command line tools xcode-select --install verbose boot messages nvram boot-args="-v" make Library visible chflags nohidden ~/Library verify Time Machine backups tmutil compare