linux¶à½ø³Ì±à³Ì
ÔÚlinuxÖÐ,ÔËÐеÄÒ»¸ö½ø³Ì,»áռȥlinuxµÄÈý¸öµØ·½,´úÂëÇø,¶ÑÕ»ÇøºÍÊý¾ÝÇø.Èç¹ûͬʱÔËÐжà¸öÏàͬµÄ³ÌÐò,ËûÃǾͻáʹÓÃÏàͬµÄ´úÂëÇø,´úÂëÇøÖдæ·ÅµÄ¾Í³ÌÐòµÄ´úÂë,µ«ÊÇÊý¾ÝÇøºÍ¶ÑÕ»Çø·Ö±ð´æ·ÅµÄÊdzÌÐòµÄÊý¾Ý,È«¾Ö±äÁ¿ºÍ¾Ö²¿±äÁ¿,Òò´Ë¼´Ê¹ÊÇÏàͬµÄ³ÌÐò,Ò²²»¿ÉͬʱʹÓÃÏàͬµÄÊý¾ÝºÍ¶ÑÕ»Çø.
#include<stdio.h>
#include<unistd.h>
int main()
{
if(fork() == 0)
{
printf("First.\n");
if(fork() == 0)
{
printf("Second.\n");
}
else
{
printf("Third.\n");
}
}
else
{
printf("Fourth.\n");
if(fork() == 0)
{
printf("Fivth.\n");
}
else
{
printf("Sixth.\n");
}
}
}
¿ÉÒÔ¹Ø×¢Ï³ÌÐòµÄÔËÐнá¹û,ÒÔ¼°Êä³öµÄ˳Ðò,²¢Àí½âΪʲôÊÇÕâÖÖÊä³ö½á¹û
Ïà¹ØÎĵµ£º
1. HCI²ãÐÒé¸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,L2capµÈÐÒé ......
ÀýÒ»£º·¢ËÍSignaling Packet£º
Signaling CommandÊÇ2¸öBluetoothʵÌåÖ®¼äµÄL2CAP²ãÃüÁî´«Êä¡£ËùÒÔµÃSignaling CommandʹÓÃCID 0x0001.
¶à¸öCommand¿ÉÒÔÔÚÒ»¸öC-frame£¨control frame£©Öз¢ËÍ¡£
Èç¹ûÒªÖ±½Ó·¢ËÍSignaling Command.ÐèÒª½¨Á¢SOCK_RAWÀàÐ͵ÄL2CAPÁ¬½ÓSocket¡£ÕâÑù²ÅÓлú»á×Ô¼ºÌî³äCommand Code£¬Identi ......
ÔÚÉÏÒ»²¿·ÖÌáµ½¹ýÁË£¬vivi×÷Ϊbootloader£¬ÏòÄں˴«µÝÆô¶¯²ÎÊýÊÇÆä±¾Ö°¹¤×÷Ö®Ò»¡£Òª°ÑÕâ¸öÇé¾°·ÖÎöÇå³þ£¬²»½ö½öÐèÒª·ÖÎöviviµÄ²ÎÊý»ú ÖÆ£¬¶øÇÒÒª·ÖÎöLinux kernelµÄ½ÓÊÕ»úÖÆ¡£ÒòΪÕâÊÇÒ»¸ö¼òµ¥µÄͨÐŹý³Ì£¬±ÈÆð±¾¿ÆËùѧϰµÄTCP/IPÀ´¼òµ¥µÄ¶à£¬µ«ÊÇÒòΪ¼òµ¥£¬ËùÒÔÔÚÐÒéÉϲ¢²»¹æ·¶£¬Àí½âÉÏ·´¶ø²»Èç TCP/IPÐÒé¡£ÏÂÃæ¾Í·ÖΪÁ½ ......
~ µ±Ç°Óû§Ä¿Â¼µÄËõд
cd ~
cd /home/<user-name>/
--help »ñÈ¡°ïÖú
vi --help
tab ×Ô¶¯²¹È«¡£Ë«»÷tab¸ø³ö²¹È«Ìáʾ¡£
Èôµ±Ç°ÃüÁîÎÞÆçÒ壬ÔòÍêÕû²¹È«¡£ÈôÓÐÆçÒåË«»÷¿ÉÁгöÌáʾѡÏî¡£
cd /e [tab], ²¹È«Îªcd /etc/
cd /b [tab-tab], ÁгöÑ¡Ïîbin/ bo ......
PCI: bus0: Fast back to back transfers disabled
PCI: Configured XX as a PCI slave with 128MB PCI memory
PCI: Each Region size is 16384KB
PCI: Reserved memory from 0x10080000 to 0x15080000 for DMA and mapped to 0x12000000
¡¡¡¡É豸µÄ³õʼ»¯ init()--->do_basic_init()--->pci_init()£¬³õÊ ......