To install stable diffusion on an Ubuntu server, you will need to first make sure that your server is up-to-date by running the following commands:
sudo apt-get update
sudo apt-get upgrade
Once your server is up-to-date, you can install stable diffusion by running the following command:
sudo apt-get install stable-diffusion
This will install stable diffusion and all of its dependencies on your Ubuntu server. After the installation is complete, you can start using stable diffusion by following the instructions in the documentation.