$ brew install telnet Error: /usr/local/Cellar is not writable. You should change the ownership and permissions of /usr/local/Cellar back to your user account: sudo chown -R $(whoami) /usr/local/Cellar Warning: You are using macOS 10.15. We do not provide support for this pre-release version. You will encounter build failures with some formulae. Please create pull requests instead of asking for help on Homebrew's GitHub, Discourse, Twitter or IRC. You are responsible for resolving any issues you experience, as you are running this pre-release version.
Error: The following directories are not writable by your user: /usr/local/Cellar /usr/local/Homebrew /usr/local/etc /usr/local/etc/bash_completion.d /usr/local/opt /usr/local/var/homebrew/linked /usr/local/var/homebrew/locks
You should change the ownership of these directories to your user. sudo chown -R $(whoami) /usr/local/Cellar /usr/local/Homebrew /usr/local/etc /usr/local/etc/bash_completion.d /usr/local/opt /usr/local/var/homebrew/linked /usr/local/var/homebrew/locks
$ brew install telnet Warning: You are using macOS 10.15. We do not provide support for this pre-release version. You will encounter build failures with some formulae. Please create pull requests instead of asking for help on Homebrew's GitHub, Discourse, Twitter or IRC. You are responsible for resolving any issues you experience, as you are running this pre-release version.
==> Downloading https://opensource.apple.com/tarballs/remote_cmds/remote_cmds-60 ######################################################################## 100.0% ==> Downloading https://opensource.apple.com/tarballs/libtelnet/libtelnet-13.tar ######################################################################## 100.0% ==> xcodebuild SYMROOT=build -arch x86_64 ==> make -C telnet.tproj OBJROOT=build/Intermediates SYMROOT=build/Products DSTR 🍺 /usr/local/Cellar/telnet/60: 4 files, 142.3KB, built in 21 seconds ==> `brew cleanup` has not been run in 30 days, running now...
