### 版本查看 命令`lsb_release -a` ``` LSB Version: :core-4.1-amd64:core-4.1-noarch Distributor ID: CentOS Description: CentOS Linux release 7.6.1810 (Core) Release: 7.6.1810 Codename: Core ``` ### 修改别名 修改linux root@后面的别名 ``` vi /etc/hostname reboot ```