Hello,
In
VPS Hosting you can't set the hostname from the shell of the
VPS Hosting as it need to be done from the Main Server on which your
VPS Hosting is hosted, otherwise the hostname will automatically change to default after reboot.
After you change the hostname of your
VPS Hosting using the method given by "flesso" then send a mail to <a href="http://www.eukhost.com/vps-...a>@eukhost.com stating the new hostname so that we can update it on the Main server.