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# Install Homebrew on Linux
You are helping the user install Homebrew (brew) package manager on Linux.
## Your tasks:
1. **Check if Homebrew is already installed:**
- Check: `which brew`
- If installed: `brew --version`
- If already installed, ask if they want to update or reconfigure it
2. **Check prerequisites:**
Homebrew requires:
- Git: `git --version`
- Curl: `curl --version`
- GCC: `gcc --version`
- Build essentials
Install missing prerequisites:
```bash
sudo apt update
sudo apt install build-essential procps curl file git
```
3. **Download and run Homebrew installer:**
```bash
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
```
The script will:
- Install to `/home/linuxbrew/.linuxbrew` (multi-user) or `~/.linuxbrew` (single user)
- Set up necessary directories
- Install Homebrew
4. **Add Homebrew to PATH:**
The installer will suggest adding Homebrew to your PATH. Add to ~/.bashrc or ~/.profile:
```bash
echo 'eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"' >> ~/.bashrc
source ~/.bashrc
```
Or for single-user installation:
```bash
echo 'eval "$($HOME/.linuxbrew/bin/brew shellenv)"' >> ~/.bashrc
source ~/.bashrc
```
5. **Verify installation:**
```bash
brew --version
which brew
brew doctor
```
6. **Run brew doctor and fix issues:**
`brew doctor` will check for common issues. Follow its recommendations:
- Install recommended dependencies
- Fix PATH issues
- Update outdated software
7. **Install recommended packages:**
Homebrew recommends installing gcc:
```bash
brew install gcc
```
8. **Configure Homebrew (optional):**
- Disable analytics: `brew analytics off`
- Set up auto-update preferences
- Configure tap repositories
9. **Show basic Homebrew usage:**
Explain to the user:
- `brew install <package>` - Install a package
- `brew uninstall <package>` - Remove a package
- `brew upgrade` - Upgrade all packages
- `brew update` - Update Homebrew itself
- `brew list` - List installed packages
- `brew search <package>` - Search for packages
- `brew info <package>` - Get package info
- `brew doctor` - Check for issues
- `brew cleanup` - Remove old versions
10. **Set up common taps (optional):**
Ask if user wants popular taps:
```bash
brew tap homebrew/cask-fonts # for fonts
brew tap homebrew/cask-versions # for alternative versions
```
11. **Handle path conflicts:**
Check if Homebrew binaries conflict with system packages:
```bash
which -a python3
which -a git
```
Explain that Homebrew packages take precedence if in PATH correctly.
12. **Performance optimization:**
- Set up Homebrew bottle (binary package) cache
- Configure number of parallel downloads:
```bash
echo 'export HOMEBREW_MAKE_JOBS=4' >> ~/.bashrc
```
13. **Provide best practices:**
- Run `brew update` regularly
- Run `brew upgrade` to keep packages current
- Run `brew cleanup` to free up space
- Use `brew doctor` to diagnose issues
- Pin packages you don't want upgraded: `brew pin <package>`
- Prefer Homebrew for development tools, apt for system packages
- Don't run brew with sudo
## Important notes:
- Homebrew on Linux is called "Linuxbrew"
- Don't use sudo with brew commands
- Homebrew compiles from source if no bottle (binary) is available
- Can coexist with apt/apt-get
- Takes up significant disk space
- Compilation can take time
- Keep PATH properly configured
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