Linux

ArticleDirectory Cron and crontab At command & Commands Nohup command When we work on a terminal or console, we may not want to occupy the screen by running a job, because there may be more important things to do, such as

ArticleDirectory Test Environment preparation Experiment Process Experiment conclusion Recently, I encountered a problem like this: I have a laptop in my house, which was originally installed on Windows 7. The computer has only

Linux Lower Cut Command Usage Details Original: frozen_sucker (popsicle) Sometimes we often encounter such problems: There is a page of phone numbers with names, residential addresses, telephone numbers, and remarks written in order, at this

Http://www.ibm.com/developerworks/cn/linux/l-ipc/   A large application system usually requires collaboration among many processes. The importance of communication between processes (see Linux Process Concept 1) is obvious. This

If your firmware is above 2.10, you don't need to read it. Because Sony completely blocked rsx access after 2.10. First, download the fc7 PowerPC version and burn it into a disc. Just like installing any Linux on the PS3, first partition and

Original code: #! /Bin/shDialog -- title "Confirm" -- yesno "Are you willing to take part? "9 18If [$? ! = 0]; thenDialog -- infobox "thank you anyway" 5 20 Sleep 2Dialog -- clearExit 0Fi The shell always warns there is a syntax error there,

1. First, modify the yum source to a 163 source to increase the speed. 2. Update Yum first: 1Yum-y update 3. Use Yum to installProgramAnd Library Yum-y install GCC gcc-C ++ Autoconf libjpeg-devel libpng-devel FreeType-devel libxml2

You can change the Linux auto-start item in/Etc/rc. dConfigureLinux boot corresponds to 7 boot levels, which are 0 ~ 6, while in/etc/rc. rcN. D corresponds to the startup items of different levels of the system. Generally, the level of the system

I. Common linux operating commands User switches SU (Super User) (1) Role: change to another user, which is used to switch common users to Super Users and enter the corresponding password. (2) Format: su [Options] [Change-username] (3)

Generally, we do not log on as root, but we need to use root permission when executing some commands. We usually use "sudo command" to execute commands. Because ubuntu is used, sudo is often used, and when sudo is used, a password is required, so I

1. Download the Subversion http://subversion.apache.org/download/2. Decompress tar-xvf./subversion-1.7.2.tar.bz23. Download SQLite-amalgamation, decompress the package, and put sqlite3.c to the directory created below.Mkdir SQLite-AmalgamationChmod 7

Syntax: zip [-acddffghjjkllmoqrstuvvwxyz $] [-B ] [-ll] [-n ] [-T ] [-] [compressed file] [file...] [-I ] [-x ] Note: Zip is a widely used compression. Program After the file is compressed, a compressed file with the ". Zip" extension will be

1. after 1-2 characters are entered on the Linux Command platform, pressing the tab key will automatically complete the following parts (the premise is that you have this thing, for example, when Tomcat is installed, enter tomcat to tab ). 2. The

TopCommandIs commonly used in LinuxPerformanceAnalysisTools, Real-time displaySystemThe resource usage of each process in, similar to a Windows task.Management. The following describes how to use it. Top-02:53:32 up 16 days, 17 users, load

LinuxRunning level Enter as AdministratorLinux, Modify the file:/Etc/inittab Find"ID:5:Initdefault:"5YesX-Window, Which is the default running level LinuxIt runs at a certain level after startup.,These running levels are listed below:

======== TCP ========== Tcp_server Socket () BIND ()Listen () Accept ()Write () Read () Close () and Shutdown ()   Tcp_client Socket () Connect () Send () and Recv () Close () and Shutdown ()   ========= UDP ==========

Basic concepts: 1> tty (collectively referred to as the terminal device ):Tty is derived from teletypes or teletypewriters. Originally, it refers to a telex typewriter, which reads and sends messages through a printer keyboard through a serial

  Http://blog.csdn.net/Grong_H/archive/2009/12/02/4923332.aspx   Linux I/O function set ---------- Header file description ------------------Sys/types. h: Common variable typeSys/STAT. h: File statusFcntl. h: file controlUnstd. h: lseek,

System command: #Uname-A # view the kernel/operating system/CPU information #Head-N1/Etc/Issue # view the operating system version #Cat/Proc/Cpuinfo # view CPU information #Hostname# Viewing computer names # lspci-TV # list all PCI devices # lsusb-

Network listener port analysis: [Root @ localhost ~] # Netstat- Tulnp###-T TCP###-U UDP###-L, -- listening display listening server sockets###-N, -- numeric don't resolve names###-P, -- Programs Display PID/program name for socketsActive Internet