You can use
brew install coreutils
And then whenever you need timeout, use
..instead. To explain why here’s a snippet from the Homebrew Caveats section:
All commands have been installed with the prefix ‘g’.
If you really need to use these commands with their normal names, you can add a “gnubin” directory to your PATH from your bashrc like:
Additionally, you can access their man pages with normal names if you add the “gnuman” directory to your MANPATH from your bashrc as well: