ubuntu host, let's rename you, shall we?

easy peasy.

to change an ubuntu system's hostname, do the following:

# /bin/hostname new.name
# vi /etc/hosts
# grep -r old.name /etc
# /etc/init.d/cron restart

on a debian system, do the following:

# /bin/hostname new.name
# vi /etc/hostname
# vi /etc/hosts
# grep -r old.name /etc
# sysctl kernel.hostname=new.name
# /etc/init.d/cron restart