Linux

1 [Email protected]:~/codelearn/helloworld/src$ g++-g main.cpp 2[Email protected]:~/codelearn/helloworld/src$./A. out3Hello world!Ten4 [Email protected]:~/codelearn/helloworld/src$ gdb A. out5GNU GDB (Ubuntu/linaro7.4-2012.04-0ubuntu2.1)7.4-2012.046

1. Description The kernel of Linux is responsible for the related work of hardware management, resource scheduling, process management, and resource management, in which memory resource management is a very important work for kernel. Kernel when

0. PrefaceIf the data is read/written from disk, the CPU is idle, wasting the compute power of this wait time CPU. So the SSD, cache, memory, register and so on is designed to reduce the CPU waiting time, the release of computing power. The industry'

We often find a file in Linux, but do not know where to put it, you can use some of the following commands to search:Which view the location of the executable file.Whereis View the location of the file.Locate to view the file location with the

Add variableExport Ffmpeg_home=/opt/ffmpegYasm:wget http://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gzTAR-ZXVF yasm-1.3.0.tar.gz./configure--prefix= "$FFMPEG _home"--bindir= "$FFMPEG _home/bin"MakeMake installAdd to environment

Only a few days ago installed Deepin, domestic LX system feel as a transition or relatively easy to startLinux small white still encountered a lot of problemsA. Solve Linux Windows dual system Linux cannot open other hard diskAt first, I thought it

I. Viewing processes1.ps Command--view static process statistics-A: Displays all process information under the current terminal, including the processes of other users-U: Output process information in a user-oriented format-X: Displays process

First to download the Hadoop package, version Select 1.2.1, for: HTTP://MIRRORS.CNNIC.CN/APACHE/HADOOP/COMMON/HADOOP-1.2.1/　　Here can download hadoop-1.2.1-tar.gz including the source code or hadoop-1.2.1-bin.tar.gz execution package does not

Under Linux to create users and delete users, must be under the root user, if you are not currently logged in with the root user, you can open the terminal, enter the "su root" command, and then enter the root password, you can enter the root user

Linux, you can use SysInfo to get information about your system. #include #include #include #include /* for _SYSCALLX macros/related stuff */#include /* for struct sysinfo */ _SYSCALL1 (int, sysinfo, struct sysinfo *, info); /* note:if copy

I. MBR sector failureMBR boot record is located in the first sector of the physical hard disk (512b=446+64+2)Symptom: Unable to start, cannot view partition table Back up the MBR sector data to a different hard drive firstDD IF=/DEV/SDA Of=/

For engineers in the Linux platform development or operations, often need to query the system last restart time, this article will give you three ways to introduce:Method one: Last command # last RebootReboot system boot 2.6.32-431.el6.i Wed

If you use VirtualBox enhancements, you can drag and drop files between the two. However, in some cases, such as when an enhanced installation encounters an issue that is difficult to resolve, or if the Linux version is a server version (for example,

Mysql problems: can't creat/write to file "/var/mysql/xxxx. MYI", creatxxxx. myi This problem has plagued me for two reasons. 1. Folder permissions are insufficient. At least the readable and writable permissions of the USERS group must be given;

Linux thread synchronization (5)-barrier, linux thread I. Overview Barrier (barrier) is different from mutex, read/write lock, and spin lock. It is not used to protect critical zones. On the contrary, like a condition variable, it is used to work

New Network Features of Linux kernel 4.4 This article has a big question, but I only want to describe some of the features that I have been paying attention to, and will not be too detailed. As usual, I mainly want to help clarify the ideas without

UDP epoll concurrency framework-UDP Listener solves the concurrency problem of OpenVPNUDP has a good encapsulation protocol. For example, OpenVPN uses UDP encapsulation, which is much better than TCP. Now more and more businesses use UDP

Homebrew command detailsHomebrew command details 1. Install Homebrew Run the following command in the Shell environment: % ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" Because the website is connected to

Why can't I install the operating system on a processor without MMU ?, Mmu ProcessorThe so-called processor is the core computing hardware of the computer. Currently, most of the machines using windows operating systems use X86 kernels, in reality,

MySQL5.6 implements master-slave replication, read/write separation, disperses the pressure on a single server, and mysql5.6 is a single server Nothing left to worry about. We will build several local virtual machines and prepare a Master/Slave