有段说明文字: # Default runlevel. The runlevels used by RHS are: # 0 - halt (Do NOT set initdefault to this) # 1 - Single user mode-------单用户模式 # 2 - Multiuser, without NFS (The same as 3, if you do not have networking)--不带网络服务的文字界面 # 3 - Full multiuser mode-------------文字界面带网络服务的,一般都是这个除非是单机 # 4 - unused # 5 - X11------------就是图形 # 6 - reboot (Do NOT set initdefault to this) id:5:initdefault: