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typedef unsigned long(*POpenDev)(IN unsigned long int);
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POpenDev OpenDev;
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 HANDLE sohandle = NULL;
sohandle  = dlopen("libNiKeyDll.so", RTLD_NOW);
if(NULL != sohandle)
{
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}
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 OPenDev = (POpenDev)dlsym(sohandle, "Opendev");
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#include<sys/types.h>
#include<dirent.h>
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DIR * opendir(const char * name);
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opendir()ÓÃÀ´´ò¿ª²ÎÊýnameÖ¸¶¨µÄĿ¼£¬²¢·µ»ØDIR*ÐÎ̬µÄĿ¼Á÷£¬ºÍopen()ÀàËÆ£¬½ÓÏ ......

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     #fdisk /dev/sda -l > /tem/sda.txt
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¡¡¡¡dd if=/dev/sda1 of=/root/mbr bs=512 count=1
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¡¡¡¡dd if=/root/mbr of=/dev/sda1 bs=512 count=1
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1.fork
            ´´½¨Ò»¸öнø³Ì
2.clone          
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3.execve
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4.exit       ......

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keyboard.c ÓÃÓÚ´¦ÀíºÍ¼üÅÌÏà¹ØµÄinput_handler¡£ÆäÖаüÀ¨ºóÐøµÄ¼üÂëת»»ºÍÊä³ö
atkbd.c  ³£ÓõļüÅ̲¼¾Ö£¬ÓÃÓÚ»ñµÃɨÃèÂ룬²¢½«Æä·¢Ë͵½input_handler Á´±íÖÐ
struct input_handler kbd_handler; ¼´Îªinput_handler Á´±íÖеÄÒ»¸öhandler
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1> ʹÓÃCDPATHÉèÖà cd ÃüÁîµÄ¹¤×÷Ŀ¼
[ramesh@dev-db ~]# pwd 
/home/ramesh 
[ramesh@dev-db ~]# cd mail 
-bash: cd: mail: No such file or directory 
[×¢Ò⣺ÔÚµ±Ç°Ä¿Â¼ÏÂѰÕÒMAILĿ¼] 
[ramesh@dev-db ~]# export CDPATH=/etc 
[ramesh@dev-db ~]# cd mail /etc/mail  ......
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