Mastering the Linux kernel Design (12): Slab Allocator for memory management

"Copyright Notice: respect for the original, reproduced please retain the source: blog.csdn.net/shallnet, the article only for learning Exchange, do not use for commercial purposes"The last section concludes that for small memory area requests, if

Linux IPC------System V

System V IPC refers to the three types of interprocess communication tools that are introduced in the system V.2 release: (1) semaphore, which is used to manage access to shared resources; (2) shared memory, which can efficiently

Linux auto-sharing USB device: Udev+samba

I. OverviewThe company recently asked me to implement the USB device into Ubuntu, automatically shared to the network, like Windows share (such as \\192.168.1.10) access to content inside, do not need write permission. At that time listen to this

The first part of the "Linux Discovery Tour" quiz

Content Introduction1 , the first part of the test question2, the second part of the first lesson trailer: Terminal terminal, play 10 Test Questions Let's choose which operating system software is called when the boot?A. BooterB.

Linux command-line editing common shortcut keys (practical, Universal)

This article describes the common shortcut keys for Linux command-line editing, which I hope will help you.Linux Command line edit shortcut keys:History displays a list of command histories↑ (ctrl+p) Show previous command↓ (CTRL + N) Displays the

Make the Linux server default to use the Chinese character set ZH_CN. UTF-8

I. Problem description and related conceptsThe character set settings of a Linux server may affect the appearance of the Web page "??? "Such as the question mark garbled, but also may result in the file part of the characters garbled."locales

Embedded Linux------SDL porting (BMP images shown under am335x)

#include #include "/usr/local/ffmpeg_arm/include/sdl/sdl.h" char *bmp_name[3] = {"000.bmp", "111.bmp", "222.bmp"};int Main () { int i=0; The images sdl_surface* hello = NULL; sdl_surface* screen = NULL; Start SDL sdl_init

Basic concepts and operations for getting started with Linux basics----

The main exercises in this section are:1, Environment Introduction 2, Common shell commands and shortcut keys 3, Linux use tipsI. Introduction to LINUX Desktop environmentCompared to the current Windows system, Unix/linux itself is not a graphical

Linux about the session cache is missing, I fell out of the pit inside

All of a sudden the session failed, and the death of the cache. Follow the solution: Program--Re-check program--File permissions--View server configurationI just want to say one thing, I'm a damn. A variety of self-abuse, all kinds of debugging.

Linux Ubuntu 12.04 is installed by default on the OPENJDK

OPENJDK is installed by default in Ubuntu 12.04, but this JDK is a lot more problematic because you can't even start eclipse, so you still need to install the JDK yourself.1. Download Jdk6JDK6: http://download.java.net/jdk6/, according to the

How to make Linux under the non-root user program use less than 1024 ports

Under Linux, by default 1024 of the following ports are to be used under the root, under other users, if the attempt to use will be an error. At some point, we may consider that the program runs under the root account, but this may pose a security

Linux Get File System information (disk information)

The source code is as follows:#include #include #include #include //File system Information Structurestructfilesystem_info{Charfilesystem_format[8];Charfilesystem_total_capacity[ One];Charfilesystem_free_capacity[ One];Charfilesystem_permissions[3];}

Password-free login to a remote Linux host via SSH

Host 1 : 172.16.222.88 [[Email protected] ~]Host 2 : 172.16.198.23 [Email protected]:~#[[email protected] ~]# ssh-keygen-t RSA = = = "in the host 1 to generate the key fileGenerating public/private RSA key pair.Enter file in which to save the key

Linux Installation Ipython Four ways

Ipython is a python interactive shellthat provides useful features such as automatic completion of code, automatic indentation, highlighting, and execution of shell commands. In particular, its code completion function, for example: After entering

Linux System API

The following is a list of Linux system calls that contain most of the common system calls and functions derived from system calls. This is probably the only list of Linux system calls you can see on the Internet, even if it's a simple alphabetical

Linux-EXT2 file system details

Linux-EXT2 file system details File System features For example, the Microsoft operating system before Windows 98 mainly uses the file system FAT (or FAT16). Versions later than Windows 2000 have the so-called NTFS file system, for Linux, the

Linux Command Tutorial: view disk space using the du command

Linux Command Tutorial: view disk space using the du commandThe du command, that is, disk usage, can calculate the disk space occupied by files or directories. Command Format: Du [Option] [file]Du [OPTION]… [FILE]…If no option is specified, it

Bind the Ubuntu system process to the CPU Core

Bind the Ubuntu system process to the CPU CoreBind the Ubuntu system process to the CPU Core This article describes how to bind a specified process to a specified CPU core in Ubuntu. The operating system is usually responsible for managing process

Fixed the GRUB error of "providing pocket BASH... like line editing" in Linux.

Fixed the GRUB error of "providing pocket BASH... like line editing" in Linux. These two days I installed Elementary OS and Windows, and encountered a Grub error at startup. The command line displays the following information: Minimal BASH like line

Centos7 apache httpd install and configure the django project, centos7django

Centos7 apache httpd install and configure the django project, centos7django1. Install the httpd service Apache is an Apache HTTP server in centos7. The following explanation of httpd is Apache HTTP Server. To install apache, you must install httpd.

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