> ## Documentation Index
> Fetch the complete documentation index at: https://docs.skydreamcloud.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Install on Ubuntu

> Install, update and launch the Ubuntu desktop app.

> [!NOTE]
>
> Public downloads are not yet available. Private testers should use the
> reviewed amd64 package supplied with their release. Local test packages
> require their matching test service; they do not connect to an announced
> public service.

## Install

Save the `.deb` file, open a terminal in its folder, and run:

```bash theme={null}
sudo apt install ./skydream-linux-amd64.deb
```

Enter your Ubuntu administrator password in the terminal. After installation,
open **Skydream** from Ubuntu's application launcher and follow account setup.

## Update

Save your work and choose **Quit Skydream** before replacing an installed build.
Install the new package with the same command. If a private test package reuses
the installed version number, explicitly reinstall it:

```bash theme={null}
sudo apt install --reinstall ./skydream-linux-amd64.deb
```

Reopen Skydream from the application launcher. Reinstalling the application is
not a request to reset your documents, account or recovery information.

## Closing and startup

With a personal session, closing an editor window allows saved work to continue
syncing in the background. Use **Quit Skydream** to stop the app completely.
Start at login is optional and can be changed in desktop settings.

## Open existing files

Use the app's open/import action or Ubuntu's **Open With** menu for supported
EPUB files. Review import-copy consent and any unsupported-content message.
Keep the original file until you have checked the imported document.

See [troubleshooting](https://docs.skydreamcloud.com/troubleshooting.md) if a package cannot be installed or the
app cannot reach its configured service.


## Related topics

- [Skydream guides](https://docs.skydreamcloud.com/index.md)
- [Troubleshooting](https://docs.skydreamcloud.com/troubleshooting.md)
- [Platform support](https://docs.skydreamcloud.com/installation/platform-support.md)


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