The steps to install Homebrew include: confirming system requirements, installing Xcode command line tools, running official installation commands, and configuring the environment variable PATH. Frequently asked questions: Use sudo chown to fix permissions. Network problems can be switched to DNS. If the command cannot be found, you need to check the PATH configuration. The remaining versions of the old version need to be manually cleaned. Follow the steps to complete the installation smoothly.

Installing Homebrew is actually not difficult. As long as the network and operation steps are fine, you can basically succeed in one go. It is a very practical package management tool that can help you easily install various development tools and command-line programs on your Mac.

Preparation: Ensure the system meets the requirements

Homebrew supports macOS and Linux, here we will only talk about the situation of Mac. First, make sure you are using a Mac with Intel or Apple Silicon (M1/M2, etc.) chip, and you have installed the latest macOS system.

You need administrator permissions because the system directory will be written during installation. If not, go to "System Preferences > Users and Groups" to enable administrator permissions.

In addition, it is recommended to install the Xcode command line tool in advance. Although it is not necessary, many dependency libraries need it to compile:

• Open the terminal and run:

   xcode-select --install

Installation steps: Copy and paste the official command

Homebrew officially recommends using the following command to install:

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

Just copy this command to the terminal and run it. The installation process may vary slightly depending on your system architecture, for example, the Mac of the M1 chip will automatically recognize and install the adapted version.

After the installation is complete, the terminal will prompt you whether you want to add brew to PATH. If it is zsh (default shell), you can add the path as prompted:

• Edit your shell configuration file (usually ~/.zprofile or ~/.bash_profile ):

   echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> ~/.zprofile
  source ~/.zprofile

This way you can use the brew command directly.

Frequently Asked Questions and Solutions

Sometimes you will encounter problems with downloads stuck, permission errors or paths that are not well-provided. Here are a few common situations:

• Permission problem : If you see a prompt similar to /usr/local/ directory permission denied, you can use the following command to fix it:

   sudo chown -R $(whoami) /usr/local/

• Network problem : Access to GitHub in China may be slow, so you can consider switching DNS, such as 8.8.8.8 or 1.1.1.1.
• Command not found : If you enter brew and report an error saying that the command cannot be found, check whether the step of configuring PATH is missed.
• Leftovers of old version : If you have installed it before and uninstalled it, it is best to clean up the remaining files and reinstall it.

Basically that's it. Installing Homebrew is not complicated, but some details are easy to ignore, such as shell configuration and permissions issues. As long as you follow it step by step, it will usually be done smoothly.

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