printf 02x

Output minimum width A decimal integer to represent the minimum number of digits of the output. If the actual number is more than the defined width, the actual digit is output, or a space or 0 if the actual number is less than the defined width

Through the Linux network programming-the original socket programming, we know that we can get the link layer packets through the raw sockets and recvfrom (), what is the link layer Packet we receive ?Link Layer envelope formatMAC head (wired

During the PHP code writing process, you often encounter problems that require Chinese transcoding, such as gb2312 Unicode, gb2312 big5, and so on. If the PHP compilation contains mbstring, you can use the multi-byte string function to partially

/**************************************** Author: Li Yannan* Time: 2006-02 2* Function: detects the local network.****************************************/ # Include # Include # Include # Include # Include # Include # Include # Include # Include #

    First of all, the following two methods can obtain the mac address of the mobile phone, but there is a limit that can be obtained only on iOS. After iOS7, Apple performed technical processing on sysctl and ioctl. the MAC address returns 02: 00: 0

Author: cker Good programmers are just like people. Think more, maybe the Stone of other mountains can attack the jade, but never become a slave of code. CkerOriginal: BorlandTranslated by cker The first method is to use Microsoft's NetBIOS API.

# Include # Include # Include # Include # Include # Include # Include # Include # Ifdef Solaris# Include # Endif # Define maxinterfaces 16 Main (argc, argv)Register int argc;Register char * argv [];{Register int FD, intrface, retn = 0;Struct ifreq

#include #include #include #include #include #include #include #include #ifdef SOLARIS#include #endif #define Maxinterfaces Main (argc, argv)register int argc;Register Char *argv[];{Register int FD, intrface, retn = 0;struct Ifreq

The first method is to use Microsoft's NetBIOS API. This is a set of commands that provide underlying network support through Winsock. The biggest disadvantage of using NetBIOS is that you must install NetBIOS in the system (if file sharing is

from:http://blog.csdn.net/zhangting1987/article/details/2732135The concept of network card address is a bit confusing. Because there are actually two addresses, MAC address and physical address, generally say the network card address I mean the