# Brew Run a diagnostic to list all the packages you've installed with Homebrew. You should see Ruby and its dependencies. ```sh brew list ``` You can uninstall Ruby from Homebrew with `brew uninstall --force ruby` The `brew autoremove` command will remove unused dependencies. **Postgres - Start / Stop** ```sh brew services start postgresql@14 brew services stop postgresql@14 ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://www.logeshpaul.com/wiki/code/brew.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.