In Gnome, if you go to Settings > Details > Overview there is a Device name field
which is the same as using
hostnamectl set-hostname blah
I've only ever ended up with a mess whenever I explicitly set --pretty --transient
hostnames. Maybe related, Adamw was building/rebuilding a server the whole network and
hostname thing gave him fits.
http://www.happyassassin.net/2013/09/22/sysadmin-adventures-local-dns-and...
Chris Murphy