changing host name
 

my linux box is now having the name "localhost"
how to change the host name?
and how to make the host name be ping from other machine?

Try searching for this topic? It has been covered many times.
May want to specifically look at this thread.

thnx anyway

You can change the host name by modifying the /etc/sysconfig/network file. Change the line HOSTNAME=<your_host_name>. That should do it.

excuse me, i have exec the hostname cmd (my proposed name is "neozeon"): hostname neozeon, amended /etc/sysconfig/network with

HOSTNAME=neozeon

and rebooted the machine

however i still cant ping the host neozeon from a client comp, the client said: unknown host, but i can ping with neozeon's ip.

You need to add an entry to
/etc/hosts
with the name and ip address. Just follow the entry for localhost which is already there. (You need to be root for this).

ah...... i should amend my question that i even cant ping 192.168.0.1 at 192.168.0.1?!

there should be sth else wrong.

i should add sth to my question. i guess the "iptable" has forbidden ping, but, i dun know how to check.

Are you allowed to give your machine a TLD extension eg mypc.com I have a dns entry for the machien as mypc.com on my inturnal network butin my networking control pannel it would not allow me to add .com after the name can I hack the /etc/sysconfig/network file and set it there ?

run this
hostname yourname

issue this command sequence to shut down iptables: