When I connect to my server (ubuntu server 10.10), I get this:
How can I remove ".belkin"?
You need to edit the computer name in two files:
These will both need administrative access, so run
gksu gedit /path/to/file
Replace any instances of the existing computer name with your new one. When complete run
sudo service hostname start
The name will also be changed if you restart your computer.
In addition to editing /etc/hosts and /etc/hostname, various services might have issues with the change as well. Mysql and postfix are installed by default in ubuntu. A broken postfix won't affect most ubuntu users, since it's a background email server that isn't used by much.
sudo editor /etc/postfix/main.cf sudo service postfix restart
The default config for mysql doesn't use hostname, so it will work fine as-is. If you have customized it, edit the files in /etc/mysql/ and restart the service.
You may also want to edit /etc/motd (message of the day), which is shown on virtual terminals and remote logins. That one won't harm anything though.
Other services that you may have installed that would need fixing are apache, bind9, etc. In each case, find and edit the hostname in their config and restart the service.
Add the PPA and update your repository
sudo add-apt-repository ppa:ailurus && sudo apt-get update
sudo apt-get install ailurus
The host name uniquely identifies your computer on the local network (and possibly on the Internet as well) so it's not a good idea to change it unless you know what you are doing.
But you can change the shell prompt not to display the
.belkin (domain name part):
export PS1='\u@\h \w> '
hostname command to change your hostname
sudo hostname newname
However, this does not edit your hosts file, which you must do so as to make sure that your computer recognizes itself
And add a new entry for your hostname pointing to 127.0.0.1
127.0.0.1 oldname newname
You could remove the old entry as well, but I prefer to keep it there.
If you don't want to play with a text editor, Ubuntu Tweak (grab the deb from their website) has that as one of the little things you can play with (along with lots of other little tweaks that you might want to make but don't really want to play around with the terminal and the files themselves).
The following command change the hostname on the fly but to make it permanent, you have to edit
echo 'new_hostname' > /proc/sys/kernel/hostname
Open a new terminal session and you'll see it right away.
systemd in place, the proper way to do it is
hostnamectl set-hostname "new_name"
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