> For the complete documentation index, see [llms.txt](https://notes.mikaelsamvelian.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://notes.mikaelsamvelian.com/macos-setup/homebrew/usage.md).

# Usage

To install a package (or **Formula** in Homebrew vocabulary) simply type:

```
brew install <formula>
```

To update Homebrew's directory of formulae, run:

```
brew update
```

To see if any of your formulas need to be updated:

```
brew outdated
```

To update a formula:

```
brew upgrade <formula>
```

Homebrew keeps older versions of formulas installed on your system, in case you want to roll back to an older version. That is rarely necessary, so you can do some cleanup to get rid of those old versions:

```
brew cleanup
```

If you want to see what formulae Homebrew would delete *without actually deleting them*, you can run:

```
brew cleanup --dry-run
```

To see what you have installed (with their version numbers):

```
brew list --versions
```

To search for formulas you run:

```
brew search <formula>
```

To get more information about a formula you run:

```
brew info <formula>
```

To uninstall a formula you can run:

```
brew uninstall <formula>
```