<p>I need to get the fully expanded hostname of the host that my Ruby script is running on.  In Perl I've used Sys::Hostname::Long with good results.  Google seems to suggest I should use Socket.hostname in ruby, but that's returning just the nodename, not the full hostname.</p>

This seems to work:
```
```
hostname = Socket.gethostbyname(Socket.gethostname).first
```
```