How can I get the FQDN of the current host in Ruby?

Question

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.

Answer 1

This seems to work:

hostname = Socket.gethostbyname(Socket.gethostname).first

Answer 2

Excellent, this was something I was looking for.

Answer 3

Could be a tad simpler => hostname = Socket.gethostname