Linux

Working at the terminal is a very interesting thing. Today, we'll list some interesting Linux commands that will bring you laughter.1. RevCreate a file, enter a few words into the file, and Rev command will reverse the output of what you wrote to

A About SEDUnlike a full-screen editor such as VI, SED is a non-interactive text editor that edits text files and standard input, which can come from keyboards, file redirects, strings, variables, and even text from pipelines. SED is the

With Linux has been a long time, has used Debian and CentOS, but has not been systematically to learn, now one is there is time, the second is the work needs to use, so ready to study with heart.First, the textbook1. Mainly in "bird Brother Linux"

Full Name:output The first part of the filesPurpose: View only the previous part of the fileformat:head [OPTION] ... [FILE] ...type:head is/usr/bin/headDescription-C,--bytes=[-]k: Displays the first k bytes of the file, and if it is negative,

"Linux kernel design and implementation" Chapter 5 reading notesIn modern operating systems, the kernel provides a set of interfaces that user processes interact with the kernel, which are: Restrict application access to hardware devices

Original works reproduced please specify the source + "Linux kernel analysis" MOOC course http://mooc.study.163.com/course/USTC-1000029000Use the same system call in the Library function API and the C code to embed the assembly code, to understand

First, IntroductionThe ARP command is used to manipulate the host's ARP buffer, which can be used to display all entries in the ARP buffer, delete the specified entry, or add a static IP address corresponding to the MAC address.Second, the grammar-a:

Part of the program:Binary parts: Generally in/bin,/sbin and other directoriesLibraries:/lib, includeConfiguration file:/etcHelp file: ManLinux Each directory brief note:/etc,/bin,/sbin,/libPrograms that need to be used when the system starts, these

Transferred from: http://www.cnblogs.com/peida/archive/2012/11/01/2749048.htmlThe NL command is used in a Linux system to calculate the line number of a file. NL can automatically add a line number to the output file content! The default result is a

Installing the JDK1. Download jdk,jdk-7u25-linux-i586.tar.gz;2. Place it in the/USR/LOCAL/SRC (this folder I used to put down the file specifically)3. [[Email protected] src]# TAR-ZXVF jdk-7u25-linux-i586.tar.gz extract JDK Package4. Move the

The log records are designed for the system equipment to report its operation during operation, in order to ensure the normal operation of the system, to solve the various problems that may be encountered every day, the network administrator must

1. What is the regular expression?To put it simply, regular expressions are a set of rules and methods that are defined to handle a large number of strings.For example: Suppose "@" stands for Hello, "!" Represents bye. echo "@!" = = "Hellobye"By

CP Copy files or directories-F Overwrite the target file or directory with the same name without reminders, but instead force overwrite-I alerts the user to confirm when overwriting a file or directory with the same name-p copy preserves the

Linux Kernel Design fourth week--------------------three layers peel one, Knowledge point summary (i.), System call basics1. User state and Kernel state Kernel state: At a high level, the code can execute privileged instructions and access

1. There is no difference between the terminals, he is to facilitate the user's login. For example, I can use the same user or other users at the same time login, switch users, only need to use ALT+CTRL+FN switch, easy to manage.2, for example, when

Install Webmin on the CentOS Server 1. log on to the server 2. Create a folder to save webmin. We recommend that you create a folder under your account ., 3. Download The Webmin Installation File, Command is: wget

Install Gitlab in Centos 6.5 Reference: https://about.gitlab.com/downloads/#centos6 1. Install Postfix and openssh Software [Root @ node1 ~] # Yuminstallcurlopenssh-serveropenssh-clientspostfixcronie [root @ node1 ~] # Servicepostfixstart [root

Install nexus in CentOS and set it to System Service CentOS 6.x: 1. download the latest source package from the official website. For example, nexus-2.11.4-01-bundle.tar.gz is saved in the/usr/local/directory. 2. decompress the package and create

Installation and Use of cmatrix in linux, linuxcmatrix Installation Process Wget http://www.asty.org/cmatrix/dist/cmatrix-1.2a.tar.gzTar xvf cmatrix-1.2a.tar.gzCd cmatrix-1.2aYum install ncurses-devel./Configure & make install Instructions for

Use Shell to change the initial MySQL password in centos In CentOS6.5, use Shell to modify the initial MySQL password, enable remote logon, and authorize remote logon users; I recently wrote a Shell script for automated deployment. I need to use