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linux 命令方式修改机器名称

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# hostname newHostName

# vi /etc/sysconfig/network

修改或增加配置：hostname=newHostName

# vi /etc/hosts

修改对应的本地HOST映射

xx.xxx.xxx.xxx newHostName

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Redhat 启动模式

修改/etc/inittab
将“id:5:initdefault:”修改为“id:3:initdefault:”，具体参数可以参见该文件中的注释部分
# Default runlevel. The runlevels used by RHS are:
#?? 0 - halt (Do NOT set initdefault to this)
#?? 1 - Single user mode
#?? 2 - Multiuser, without NFS (The same as 3, if you do not have networking)
#?? 3 - Full multiuser mode
#?? 4 - unused
#?? 5 - X11
#?? 6 - reboot (Do NOT set initdefault to this)