[root@localhost ~]# hostname
127.0.0.1 localhost.localdomain
::1 localhost6.localdomain6 localhost6
localhost.localdomain

[root@localhost ~]# hostname leitest

[root@localhost ~]# vi /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=leitest

[root@localhost ~]# vi /etc/hosts
127.0.0.1 localhost.localdomain
::1 localhost6.localdomain6 localhost6
192.168.6.40 leitest

[@more@]