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[root@localhost /]# shutdown [-tÃë] [-arkhcncfF] [ʱ¼ä] [ÌáʾÐÅÏ¢]
[root@localhost /]# shutdown -h 10 'I will shutdown after 10 mins'
-t sec : -t ºó¼ÓÃëÊý£¬¼´‘¹ý¼¸ÃëÖÓºó¹Ø»ú’µÄÒâ˼¡£
-k : ²»ÒªÕæµÄ¹Ø»ú£¬Ö»ÊÇ·¢ËÍÌáʾÐÅÏ¢¡£
-r : ÔÚ½«ÏµÍ³µÄ·þÎñ¹ØµôÖ®ºó¾ÍÖØÐÂÆô¶¯¡£
-h : ÔÚ½«ÏµÍ³µÄ·þÎñ¹ØµôÖ®ºó¾Í¹Ø»ú¡£
-n : ²»Òª½ø¹ýinit³ÌÐò£¬Ö±½ÓÒÔshutdown¹Ø»ú¡£
-f : ¹Ø»ú²¢Æô¶¯ºó£¬Ç¿ÖÆÂÔ¹ýfsckµÄ´ÅÅ̼ì²é
-F : ÏµÍ³ÖØÐÂÆô¶¯ºó£¬Ç¿ÖƽøÐÐfsckµÄ´ÅÅ̼ì²é
-c : È¡ÏûÒѾÔÚ½øÐеÄshutdownÃüÁî·û
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[root@localhost /]#shutdown -h now
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[root@localhost /]#shutdown -h 20:25
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[root@localhost /]#shutdown -h +10
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[root@localhost /]#shutdown -r now
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[root@localhost /]#shutdown -r +30 'The system will reboot'
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[root@localhost /]#shutdown -r +30 'The system will reboot'
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03 // The beginning of C program: test06-05.c.
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which(ѰÕÒ“Ö´ÐÐÎļþ”)
[root@localhost home]# which [-a] command
-a : ½«ËùÓпÉÕÒµ½µÄÃüÁî¾ùÁгö£¬¶ø²»½ö½öÁгöµÚÒ»¸öÕÒµ½µÄÃüÁîÃû³Æ
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[root@localhost home]# which passwd
/usr/bin/passwd ......