Centos修改主机名
假设需要设置的主机名是 linux.yzctc.com，其中linux是主机名，yzctc.com是域名。首先：
在命令行下运行 [*]hostname yourhostname
示例： [*]hostname linux
然后：
修改/etc/sysconfig/network中的hostname
原始文件如下：
# vi /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
#HOSTNAME=localhost.localdomain
HOSTNAME=yourhostname
~
修改为：
# vi /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
#HOSTNAME=localhost.localdomain
HOSTNAME=linux
最后：
修改/etc/hosts文件
原始文件如下：
# vi /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost yourhostname
::1 localhost6.localdomain6 localhost6
修改为：
# vi /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost linux
::1 localhost6.localdomain6 localhost6
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