Linux

This gives a server and a client, the server can accept multiple connections, and use the Go Killer feature go and channel to replace select for data reception.Service side:Package Mainimport ("FMT". "Syscall") func recvroutine (SOCKFD int, session

If you simply want to encrypt the transfer while transferring data, the SSL certificate does not require authentication, but the browser opens with a warning message. Let's say we're not doing a public product, so it's okay.Here is a note to study

Every morning to the company the first thing to open the computer, open my QQ, my development tools idea, look at the mail, day after day, become lazy, also become smart, wrote the following scriptFile name: mystart.sh#!bin/bash# Check if my

background:Recently want to develop QT+OPENCV on the embedded platform, the OPENCV program written on the non-material PC always can't open the video.Start prompt: OpenCV error:bad argument (Array should be Cvmat or iplimage) in CvgetsizeBut there's

After the BIOS triggers a 0x19 interrupt to load the first sector (512B) of the disk into memory, the computer actually starts executing the program on the disk. And this 512B program Bootsect.s in the first batch of code, at this time the processor

Original address: Linux device driver Induction summary diytvgyObjective:(the summary has been basically finished, this time I will be new typesetting and revision.) Mistakes always have, hope can correct! )The previous period of time to learn the

win8.1-pl2303-Raspberry Pi, 9600 baud rate communication OKReference ibm:http://www.ibm.com/developerworks/cn/linux/l-serials/#include #include#include#include#include#include#include#include#includestring.h>#defineTRUE 0#defineFALSE-1intSpeed_arr[]

In the unit with U disk installed ArchLinux, after installation, the U disk did not control it, then the girlfriend to use a U disk, I dumped a sentence, in your windows of the machine format a bit of the U disk can be used, who know, on this

For Windows users, it is often possible to press and hold the Power key for a few seconds before forcing the shutdown if they are having trouble. But for Linux, this is strongly not recommended.Because the Windows (non-NT host system) system is

Time to modify Linux can use the date directiveDate Modified:The order of the time set to May 10, 2009 is as follows:#date-S 05/10/2009Modification Time:The command to set the system time to 10:18 A.M. 0 seconds is as follows.#date-S 10:18:00To

During system maintenance, it may be necessary to review the CPU usage at any time, and to analyze the system condition according to the corresponding information. In CentOS, you can view CPU usage by using the top command. After running the top

Linux Rights Management commands are mainly chown,chgrp,chmod.Linux PermissionsLinux has the following permissions: R,w,x.For a file: R is readable, that is, it can be viewed with commands such as Cat, w means writable, can edit or delete the file,

There are two times on Linux today, one is Linux, the other is BIOS time (real hardware recording time)! We can use the date command to manually fix the current host time, but the date command only corrects Linux time, and we also need to update the

DTS concept, here is not much to say,My example here is OpenWrt DTS; the CPU is 7620;Here's Power_led's Gpio 44First look at the right image:There is a structure called Gpio2,Gpio-base:gpio number of head, base addressNum-gpios:gpio Number of

Use the function Getifaddrs to enumerate the network card IP, where the structure used is as follows:struct Ifaddrs { struct Ifaddrs *ifa_next; /* Next Item in list */ char *ifa_name; /* Name of interface */ unsigned

"All Documents" is a very important idea in the Unix/linux system.In a Linux system, each device is treated as a file, specifically to the hardware. The following is a list of the file names of several common devices in a Linux system.

1. Function descriptionPipe (Build pipeline):1) header file #include 2) define function: int pipe (int filedes[2]);3) function Description: Pipe () creates a pipeline and returns the description of the file as a filedes array of parameters.Filedes[0]

There are three main text processing tools on the Linux system: Grep,sed,awk, which looks at awk this time.awk option ' pattern ' file-f Specifies the delimiter;-V Declaration of custom variables;View the user name and user shell on the current

The length limit for a Linux file name is 255 charactersFully qualified file names under Windows must be less than 260 characters, and folder names must be less than 248 characters.limitations of the number of Linux items, folders, and file name

1. Linux directory Operation Command------ Directory addition, deletion, modification, and query ------Cd, Pwd, ls, mkdir, mv, ls (du, df,Tree)Switch directory, similar to the use of windows, the detailed information of the cd display directory is