---
weight: 40
---

## Modules

The PaaS is really modular, that's why it contains the strict necessary, then you'll probably want to add [`system`](./system) modules or [`applications`](./applications).

There are 2 [unit-files](https://lab.libreho.st/libre.sh/compose.libre.sh/tree/master/unit-files) to manage system modules and applications.

### Debugging

```
libre ps
libre logs -f --tail=100
libre stop
libre restart
```