# Installing/Upgrading the software

- For a first time installation, go to the directory where you want to install Abyss Web Server. From now on, `<Abyss Web Server directory>` will refer to this directory.

- Execute:

  `tar xzfm <Abyss Web Server installation package>`

- If you are upgrading, stop Abyss Web Server, go to the directory where the old version of Abyss Web Server is already installed and execute the following commands:

  `mv htdocs/index.html htdocs/index.html.bak`

  `cd ..`

  `tar xzfm <Abyss Web Server installation package>`

  `cd abyssws`

  `mv htdocs/index.html.bak htdocs/index.html`

  If errors are reported when executing the first and the last command, ignore them: they occurred because you have no `index.html` file in the `htdocs` directory.