一、安装软件

1. 去https://brew.sh/

2. 在主页上找到上图的代码复制到终端（我直接放下面了 更新日期2023年3月28日）

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

3. 会出现以下内容，直接按键盘上的RETURN或ENTER按钮继续：

==> 正在检查 `sudo` 访问权限（可能需要您的密码）...

（电脑锁屏的密码，盲输）
密码：
==> 该脚本将安装：
/opt/homebrew/bin/brew
/opt/homebrew/share/doc/homebrew
/opt/ homebrew/share/man/man1/brew.1
/opt/homebrew/share/zsh/site-functions/_brew
/opt/homebrew/etc/bash_completion.d/brew
/opt/homebrew
==> 以下新目录将是创建：
/opt/homebrew/bin
/opt/homebrew/etc
/opt/homebrew/include
/opt/homebrew/lib
/opt/homebrew/sbin
/opt/homebrew/share
/opt/homebrew/var
/opt/homebrew/opt
/opt/homebrew/share/zsh
/opt/homebrew/share/zsh/site-functions
/opt/homebrew/var/homebrew
/opt/homebrew/var/homebrew/linked
/opt/homebrew/Cellar
/opt/homebrew/Caskroom
/opt/homebrew/Frameworks按 RETURN/ENTER 继续或任何其他键中止：

4. 根据网速，可能需要一些时间。

若出现警告，则进入第二部分。（M1芯片一般会警告）

        （前省略）

···

        HEAD is now at 12e7787eb Merge pull request #15058 from apainintheneck/fix-readall-no-simulate

        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; echo 'eval "$(/opt/homebrew/bin/brew shellenv)"') >> /Users/wangqian/.zprofile

            eval "$(/opt/homebrew/bin/brew shellenv)"

        - Run brew help to get started

        - Further documentation:

            https://docs.brew.sh

翻译（渣机翻帮助理解）：

（前省略）

警告：/opt/homebrew/bin 不在您的路径中。
 有关如何为 Homebrew 配置 shell 的说明，
 请参见下面的“后续步骤”部分。
==> 安装成功！==> Homebrew 启用了匿名聚合公式和木桶分析。
在此处阅读分析文档（以及如何选择退出）：https:
 //docs.brew.sh/Analytics
尚未发送任何分析数据（在此安装运行期间也不会发送任何数据）。==> Homebrew 完全由无偿志愿者运行。请考虑捐赠： https:
 //github.com/Homebrew/brew#donations==> 后续步骤：
- 在您的终端中运行这两个命令以将 Homebrew 添加到您的 PATH 中：
   echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> /Users/yourname/.zprofile
   eval " $(/opt/homebrew/bin/brew shellenv)"
- 运行 brew help 开始
- 更多文档：
   https://docs.brew.sh

二、问题说明及操作：

1.说明：类似于windows系统下的配置环境变量。

要按照“后续步骤”并将 Homebrew 添加到 PATH，以便brew从终端的任何位置运行。如果不这样做，每次运行时都会看到brew：

$ brew install something
zsh：找不到命令：brew

2、操作

粘贴入终端并运行：

echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> /Users/<willshowyouruserdirectory>/.zprofile

再粘贴入终端并运行：

eval "$(/opt/homebrew/bin/brew shellenv)"

完成。