Homebrew Cakebrew: A Guide to Fixing the 'Command Not Found' Error on Mac with Zsh Shell

If you're a Homebrew user who's experiencing the 'command not found' error when trying to use the `brew` command in your zsh shell, don't worry - this article will guide you through the process of fixing this issue.

The problem is usually caused by the zsh shell being unable to find the brew binary to execute. This can be due to a variety of reasons such as incorrect PATH settings or issues with the Homebrew installation.

To fix the 'command not found' error, we'll perform a series of actions to reinstall Homebrew and then set the path manually if necessary.

First, let's check if the Homebrew path is set correctly. To do this, you can add the following line to your `~/.bash_profile` or `~/.zprofile` file:

```

eval $(brew shellenv)

```

This command sets the necessary environmental variables for brew to work correctly. You can also add this command to your dotfiles (e.g., `~/.zshrc`) by using the following command:

```

echo 'eval $(/opt/homebrew/bin/brew shellenv)' > ~/.zshrc

```

Next, try running the following command to repair brew if needed:

```

brew doctor

```

This command will check your PATH and add a new PATH with the `export` command. If you're still experiencing issues, you can manually add the following line to your `~/.zshrc` file:

```

echo 'export PATH=/opt/homebrew/bin:$PATH' > ~/.zshrc

```

After completing these steps, attempt to use the `brew` command again to install a package, update, or remove a package. If you're still experiencing issues, you can try reinstalling Homebrew and then setting the path manually.

To do this, enter the following command exactly:

```

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

```

This will reinstall Homebrew and set the path correctly. After completing these steps, you should be able to use the `brew` command again without any issues.

In conclusion, the 'command not found' error with brew is usually caused by incorrect PATH settings or issues with the Homebrew installation. By following the steps outlined in this article, you should be able to fix the issue and get your brew command working correctly again.

Additionally, if you're experiencing the issue after installing Oh-my-zsh, you may need to try manually adding the following line to your `~/.zshrc` file:

```

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

```

This will add the Homebrew path to your PATH and allow you to use the `brew` command again.

By following these steps, you should be able to resolve the 'command not found' error with brew and get back to using your favorite package manager on your Mac.

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