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linux fork()º¯Êýѧϰ

#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
int main()
{
    pid_t pid;
    static int n = 0;
    printf("fork!\n"); /*printf("fork!")*/
    switch (pid = fork())
    {
        case -1:
        {
            /* ÕâÀïpidΪ-1£¬forkº¯Êýʧ°Ü */
            /* һЩ¿ÉÄܵÄÔ­ÒòÊÇ */
            /* ½ø³ÌÊý»òÐéÄâÄÚ´æÓþ¡ */
            perror("The fork failed!");
            break;
        }
        case 0:
        {
            /* pidΪ0£¬×Ó½ø³Ì */
            printf("[child]i am child!\n");
            printf("[child]getpid=[%d]\n", getpid() );
            printf("[child]pid=[%d]\n", pid );
            break;
        }
        default:
        {
            /* pid´óÓÚ0£¬¸¸½ø³Ì */
            printf("[parent]i am parent!\n" );
            printf("[parent]getpid=[%d]\n",getpid() );
            printf("[paren


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ʵսLinux Bluetooth±à³Ì£¨Èý£© HCI²ã±à³Ì

1. HCI²ãЭÒé¸ÅÊö£º
HCIÌṩһÌ×ͳһµÄ·½·¨À´·ÃÎÊBluetoothµ×²ã¡£ÈçͼËùʾ£º
´ÓͼÉÏ¿ÉÒÔ¿´³ö£¬Host Controller Interface(HCI)  ¾ÍÊÇÓÃÀ´¹µÍ¨HostºÍModule¡£Hostͨ³£¾ÍÊÇPC£¬ ModuleÔòÊÇÒÔ¸÷ÖÖÎïÀíÁ¬½ÓÐÎʽ£¨USB,serial,pc-cardµÈ£©Á¬½Óµ½PCÉϵÄbluetooth Dongle¡£
ÔÚHostÕâÒ»¶Ë£ºapplication,SDP,L2capµÈЭÒé ......

ʵսLinux Bluetooth±à³Ì£¨ËÄ£© L2CAP²ã±à³Ì

£¨L2CAPЭÒé¼ò½é£¬L2CAPÔÚBlueZÖеÄʵÏÖÒÔ¼°L2CAP±à³Ì½Ó¿Ú£©
Ò»£ºL2CAPЭÒé¼ò½é£º
Logical Link Control and Adaptation Protocol(L2CAP)
Âß¼­Á¬½Ó¿ØÖƺÍÊÊÅäЭÒé (L2CAP) ΪÉϲãЭÒéÌá¹©ÃæÏòÁ¬½ÓºÍÎÞÁ¬½ÓµÄÊý¾Ý·þÎñ£¬²¢Ìṩ¶àЭÒ鹦ÄܺͷָîÖØ×é²Ù×÷¡£L2CAP ³äÐíÉϲãЭÒéºÍÓ¦ÓÃÈí¼þ´«ÊäºÍ½ÓÊÕ×î´ó³¤¶ÈΪ 64K µÄ L2CAP Ê ......

[תÌû]LinuxÇý¶¯¿ª·¢Ñ§Ï°µÄһЩ±ØÒª²½Öè

 1. ѧ»áд¼òµ¥µÄmakefile
2. ±àһЩӦÓÃ
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3. ѧ»áдÇý¶¯
µÄmakefile
4. дһ¼òµ¥charÇý¶¯£¬makefile±àÒëͨ¹ý£¬¿ÉÒÔinsmod£¬ lsmod£¬ rmmod. ÔÚÇý¶¯µÄinitº¯ÊýÀï´òÓ¡hello world£¬insmodºóÓ¦¸ÃÄܹ»Í¨¹ýdmesg¿´µ½Êä³ö
¡£
5. дһÍêÕûÇý¶¯£¬ ¼ÓÉÏread£¬ write£¬ ioctl£¬ pollingµÈ¸ ......

VMÐéÄâ»úÏÂLinux arm COM(´®¿Ú)ÓëJTAG(²¢¿Ú) ÅäÖÃͼ½â


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Apache LinuxÉÏRPM°üÐ¶ÔØ ±¸Íü

[root@apache02 home]# rpm -q -a|grep http
httpd-2.0.52-25.ent
httpd-manual-2.0.52-25.ent
system-config-httpd-1.3.1-1
httpd-devel-2.0.52-25.ent
httpd-suexec-2.0.52-25.ent
#rpm -e httpd-2.0.52-25.ent
error: Failed dependencies:
        httpd-mmn = 20020903 is ......
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