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   ²é¿´ÏµÍ³½ø³ÌÃüÁ#ps   -ef|head
     ²é¿´initµÄÅäÖÃÎļþ£º#more   /etc/inittab
     ²é¿´ÏµÍ³µ±Ç°ÔËÐеļ¶±ð£º#runlevel
2)   ÔËÐм¶±ð
   µ½µ×ʲôÊÇÔËÐм¶ÄØ£¿¼òµ¥µÄ˵£¬ÔËÐм¶¾ÍÊDzÙ×÷ϵͳµ±Ç°ÕýÔÚÔËÐеŦÄܼ¶±ð¡£Õâ¸ö¼¶±ð´Ó0µ½6 £¬¾ßÓв»Í¬µÄ¹¦ÄÜ¡£ÄãÒ²¿ÉÒÔÔÚ/etc/inittabÖв鿴ËüµÄÓ¢ÎĽéÉÜ¡£
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# 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)
id:5:initdefault:
#0                    Í£»ú(ǧÍò²»ÄܰÑinitdefault ÉèÖÃΪ0)
#1                    µ¥Óû§Ä£Ê½
#2                    ¶àÓû§£¬Ã»ÓÐ NFS(ºÍ¼¶±ð3ÏàËÆ£¬»áÍ£Ö¹²¿·Ö·þÎñ)
#3                    ÍêÈ«¶àÓû§Ä£Ê½
#4                    Ã»ÓÐÓõ½
#5                    x11(Xwindow)
#6         &nbs


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