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hostname命令-ghosts-51CTO博客
source link: http://blog.51cto.com/13559120/2070009
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hostname命令用于显示和设置系统的主机名称。环境变量HOSTNAME也保存了当前的主机名。在使用hostname命令设置主机名后，系统并不会永久保存新的主机名，重新启动机器之后还是原来的主机名。如果需要永久修改主机名，需要同时修改/etc/hosts和/etc/sysconfig/network的相关内容。语法hostname(选项)(参数)选项-v：详细信息模式；-a：显示主机别名；-d：
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