M1・M2 MacにHomebrewを（アン）インストールする方法

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

% /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
==> Checking for `sudo` access (which may request your password)...
Password:

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==> The Xcode Command Line Tools will be installed.
Press RETURN/ENTER to continue or any other key to abort:

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HEAD is now at 33de21ab57f vineyard: add 0.7.2 bottle.
Warning: /opt/homebrew/bin is not in your PATH.
Instructions on how to configure your shell for Homebrew
can be found in the 'Next steps' section below.
==> Installation successful!

==> Homebrew has enabled anonymous aggregate formulae and cask analytics.
Read the analytics documentation (and how to opt-out) here:
https://docs.brew.sh/Analytics
No analytics data has been sent yet (nor will any be during this install run).

==> Homebrew is run entirely by unpaid volunteers. Please consider donating:
https://github.com/Homebrew/brew#donations

==> Next steps:
- Run these two commands in your terminal to add Homebrew to your PATH:
    echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> /Users/ユーザー名/.zprofile
    eval "$(/opt/homebrew/bin/brew shellenv)"
- Run brew help to get started
- Further documentation:
https://docs.brew.sh

==> Next steps:
- Run these two commands in your terminal to add Homebrew to your PATH:
    echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> /Users/ユーザー名/.zprofile
    eval "$(/opt/homebrew/bin/brew shellenv)"
- Run brew help to get started
- Further documentation:
    https://docs.brew.sh

echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> /Users/ユーザー名/.zprofile
eval "$(/opt/homebrew/bin/brew shellenv)"

brew -v
Homebrew 3.4.11
Homebrew/homebrew-core (git revision c16f32d9702; last commit 2022-05-17)

% brew update
==> Homebrew is run entirely by unpaid volunteers. Please consider donating:
    https://github.com/Homebrew/brew#donations
Updated 1 tap (homebrew/core).

% brew upgrade          
Running `brew update --preinstall`...
==> Auto-updated Homebrew!
Updated 2 taps (homebrew/core and homebrew/cask).

==> New Formulae
adamstark-audiofile                      mariadb@10.7
astro                                    markdown-toc
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==> Upgrading git
  2.36.1 -> 2.37.2 

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==> zsh-completions
To activate these completions, add the following to your .zshrc:

  if type brew &>/dev/null; then
    FPATH=$(brew --prefix)/share/zsh-completions:$FPATH

    autoload -Uz compinit
    compinit
  fi

You may also need to force rebuild `zcompdump`:

  rm -f ~/.zcompdump; compinit

Additionally, if you receive "zsh compinit: insecure directories" warnings when attempting
to load these completions, you may need to run this:

  chmod -R go-w '/opt/homebrew/share/zsh'
==> git

The Tcl/Tk GUIs (e.g. gitk, git-gui) are now in the `git-gui` formula.
Subversion interoperability (git-svn) is now in the `git-svn` formula.

zsh completions and functions have been installed to:
  /opt/homebrew/share/zsh/site-functions

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall.sh)"