[LINUX 基础] 修改主机名

1. CentOS
# vim /etc/sysconfig/network
-HOSTNAME=centos57
+HOSTNAME=localhost.localdomain

# vim /etc/hosts
-127.0.0.1   localhost.localdomain localhost.localdomain
+127.0.0.1   localhost localhost

# /sbin/sysctl -a | grep hostname
kernel.hostname = centos57

# hostname
centos57

# cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=centos57
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2.Ubuntu
# vi /etc/hostname
# vi /etc/hosts