# Plugin > See also: [How to manage plugins](https://documentation.ubuntu.com/juju/2.9/howto/manage-plugins.md#manage-plugins) A `juju` plugin is an external command that works with `juju` but which is not part of the `juju` core code. At a more technical level, a `juju` plugin is any executable file in your `$PATH` that begins with `juju-`. Although you can run these independently of the Juju command line (`juju-`), Juju will also wrap these commands so they can be run within Juju (`juju `). > See more: > - [List of known Juju plugins](https://documentation.ubuntu.com/juju/2.9/reference/plugin/list-of-known-juju-plugins.md#list-of-known-juju-plugins) > - [Plugin flags](https://documentation.ubuntu.com/juju/2.9/reference/plugin/plugin-flags.md#plugin-flags)