Linux

The Heartbeat project is an integral part of the LINUX-HA project, which implements a highly available cluster system. With heartbeat we can implement dual-machine hot-standby to achieve the continuity of service.High-availability cluster

The Linux operating system continues to evolve and improve, and the kernel version is constantly being updated. For Linux users, learning to compile and install the Linux kernel becomes very important if you don't want to appear too "low". The

Introduction to the installation method of CentOS YumYum can resolve dependencies on its own, and Yum is dependent on rpmYum needs to build a file server to store RPM packagesServer for File services:FTP ServiceHTTP ServiceLocal Files DirectoryNFS

All the content is collected in the network, part of the simple translation First, use screen to execute commandsnohup & The command executes after the command is executed in the background, even if you exit the login. However, you cannot reconnect

1. Install Samba $ sudo apt-get install Smbfs $ sudo apt-get install cifs-utils $ sudo chmod 777 ws_host2, modify the/etc/samba/smb.confModify the following items for everyone to access# "Security = user" is always a good idea. This would require a

LAN has two Linux A, B, where A's root directory is/sys/upload, want to based on file sharing, on a and B are set up the same directory/SYS/ABCD, so that access to/SYS/ABCD, as the operation of local files as the operation of/SYS/ABCD, This requires

Directory processing command: LSCommand name: LSCommand English original meaning:listCommand location:/bin/lsExecute Permissions: All UsersFunction Description: Display directory fileSyntax: LS option [-ald][file or directory]-a displays all files,

File Search command: FindCommand name: FindCommand location:/bin/findExecute Permissions: All UsersFunction Description: File searchSyntax: Find [Search Range] [match condition]$ fimd/etc-name InitFind file init in directory/etc-iname Case

Attack tipsIf you are going to do some rubbing, you need to take some steps to protect yourself. This is the premise of everything, or I will hunt you down and ruin your life.I summed up a few big bogey (fuckups): Do not perform operations on

Kmalloc/kfree is used to partition and reclaim low-area memory in kernel space. The reorganization method does not divide the memory directly through the partner system, and is distributed through the slab algorithm. An array cache is also provided

Linux in the way of C, the creation of the server is mainly composed of several modules: the creation of the section Word, the encapsulation IP address and port number, and socket connection method, the binding socket and the encapsulated struct

1.cat/proc/cpuinfo: Viewing CPU information1.1 Cat/proc/cpuinfo | grep "Processor" | Wc–l: View the number of logical CPUs1.2 Cat/proc/cpuinfo | grep "Physical ID" | Sort-u | Wc–l: View the number of physical CPUs1.3 Cat/proc/cpuinfo | grep "Core ID"

A regular expression is a pattern that describes a set of strings, and there are many character sets that consist of and metacharacters characters of ordinary words. The primary function of regular expressions is to perform text searches and string

1. Linux configuration IP address 1) ifconfig command temporarily configure IP address Ifconfig command to view Linux network status Ifconfig eth0 192.168.0.200 netmask 255.255.255.0 temporarily configure the IP address and subnet mask

#！ /bin/bashCtime= ' Date +%x%t 'monitor_dir=/home/jk/if [!-D $monitor _dir]; Thenmkdir $monitor _dirFiCD $monitor _dirWeb_stat_log=web.statusif [!-f $web _stat_log]; ThenTouch $web _stat_logFiServer_list_file=server.listif [!-f $server _list_file];

1. Linux Multithreading Overview 1.1. OverviewProcess is the basic unit of program execution and resource allocation in the system. Each process has its own data segments, code snippets, and stack segments. This causes the process to switch

Common Linux commands & usage tips and common linux commands # Viewing operating system information # Command:Cat/etc/issue Comments: view the linux release version, which is applicable to suse, rethat, and centos. Command:Cat/proc/version Comments:

Mount windows shared folders to Centos1. Windows 7 shares a folder(1) create a user: devin, password: admin123 (2) create a folder on the E drive, share, set share to share with the user devin, and set the permission: read and Write. 2. Create a

How to Use yum in CentOS Yum online upgrade mechanism. After analyzing the title database of RPM, yum creates a dependency-based solution based on the relevance of each software, and then automatically handles the dependency attribute of the

Install FastDFS in CentOS 6.4 and use Nginx as the WEB Server Installation environment:1. CentOS-6.4-i3862. FastDFS_v4.063. fastdfs-nginx-module_v1.154. Nginx-1.5.6 (see here for installation)5. libevent-2.0.21-stable Tracker server