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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
ϵͳÔÚ½ñÌìµÄ20:25¹Ø»ú
[root@localhost /]#shutdown -h 20:25
ϵͳÔÙ¹ý10·ÖÖÓºóÖØÐÂÆô¶¯
[root@localhost /]#shutdown -h +10
ϵͳÁ¢¼´ÖØÐÂÆô¶¯
[root@localhost /]#shutdown -r now
ÔÙ¹ý30·ÖÖÓϵͳ»áÖØÐÂÆô¶¯£¬²¢ÏÔʾºóÃæµÄÐÅÏ¢
[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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linux 0.11 ÄÚºËѧϰ fcntl.c


/*
 *  linux/fs/fcntl.c
 *
 *  (C) 1991  Linus Torvalds
 */
#include <string.h>
#include <errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <asm/segment.h>
#include <fcntl.h>
#include <sys/stat. ......

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Ò»ÖÖÊÇͨ¹ýÖÕ¶ËÊÖ¶¯¹ÒÔØ¼ÓÉϲÎÊý: -o iocharset=utf8
                  È磺# mount /dev/sdb1 -t vfat /mnt/usb/ -o iocharset=utf8
µÚ¶þÖÖÊÇͨ¹ý¼ÓÈëÄÚºËÖ§³ÖÔÚFile systems  --->  DOS/FAT/NT Filesystems  --->ÖÐÓÐÁ½ÏîÐÞ¸ÄΪ£ ......

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   LinuxÊÇÒ»ÖÖÀàUnixµÄ²Ù×÷ϵͳ¡£´ÓÀíÂÛÉϽ²£¬Unix±¾ÉíµÄÉè¼Æ²¢Ã»ÓÐÊ²Ã´ÖØ´óµÄ°²È«È±ÏÝ¡£¶àÄêÀ´£¬¾ø´ó¶àÊýÔÚUnix²Ù×÷ϵͳÉÏ·¢ÏֵݲȫÎÊÌâÖ÷Òª´æÔÚÓÚ¸ö±ð³ÌÐòÖУ¬ËùÒԴ󲿷ÖUnix³§É̶¼Éù³ÆÓÐÄÜÁ¦½â¾öÕâЩÎÊÌ⣬Ìṩ°²È«µÄUnix²Ù×÷ϵͳ¡£µ«LinuxÓÐЩ²»Í¬£¬ÒòΪËü²»ÊôÓÚijһ¼Ò³§ÉÌ£¬Ã»Óг§ÉÌÐû³Æ¶ÔËüÌṩ°²È«±£Ö¤£ ......

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      ÆäʵÕâ¶Îʱ¼ä·Ç³£µÄ棬æµ½Á¬×ö·¹³ÔµÄʱ¼ä¶¼Ã»ÓÐÁË¡£µ«ÊǽñÌìÎÒÌØÒâ³é¿Õ£¬À´¸ø¹Ø×¢ÎÒµÄÅóÓÑÃÇÒ»µãµã½»´ú¡££¨ÒòΪ½ñÌì·¢ÏÖ¹Ø×¢µÄÈË»¹Âù¶àµÄ£¬ÓеãÊܳèÈô¾ª°¡£¡¹þ¹þ....£©ÈçÌâÎÒÔÝʱֻÄܸø´ó¼ÒһЩ´ó¸Ù£¬ºÜÏêϸµÄѧϰ¹ý³ÌÒªµÈ´ó¸Å°ë¸öÔµÄʱ¼ä£¬ÎÒÓÐÁË¿ÕÏÐʱ¼ä²ÅÄÜ ......

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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 ......
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