In case you encounter this error below when doing brew update:
==> Homebrew has enabled anonymous aggregate formula and cask analytics.
Read the analytics documentation (and how to opt-out) here:
https://docs.brew.sh/Analytics
No analytics have been recorded yet (nor will be during this `brew` run).
==> Homebrew is run entirely by unpaid volunteers. Please consider donating:
https://github.com/Homebrew/brew#donations
Updated 1 tap (homebrew/core).
No changes to formulae.
Error: Failed to link all completions, docs and manpages:
Permission denied @ rb_file_s_symlink - (../../../Homebrew/completions/zsh/_brew, /usr/local/share/zsh/site-functions/_brew)
? tfm git:(master) ? sudo chown -R $(whoami) $(brew --prefix)/*
Copy-and-paste the following in your terminal:
sudo chown -R $(whoami) $(brew --prefix)/*