Linux

After two weeks of intermittent learning, finally the Mu class online Tony Teacher's "Linux network Management" basic knowledge of learning. Tony's teacher is witty, humorous, and call!! for the teacher.Course Address: https://www.imooc.com/learn/258

The more command, which functions like cat, the Cat command is the entire contents of the file displayed on the screen from top to bottom. More will be a page-by-page display to facilitate users to read pages, and the most basic instruction is to

InternetThe $ifconfig displays the network interface and the corresponding IP address. Ifconfig can be used to set the network interface$ifup eth0 running Eth0 interface$ifdown eth0 off Eth0 interface $iwconfig display wireless network

Remote access Security-sshHow can I make SSH more secure?SSH security and configuration best practices:* restrict the root account to console access only and do not allow SSH login# Vim/etc/ssh/sshd_configPermitrootlogin No# systemctl Restart

Environment: Virtual machine VM 12,linux version number CentOS 7.31, right-click on the current Virtual Machine tab and select "Settings"2, select "Disk" on the left side of the popup dialog box, click "Add" button below, click "Next" button in the "

Preface : There are many kinds of operating system now, I mainly talk about Linux operating system, first we understand Linux system, Linux is a set of free-to-use and free-spread UNIX-like operating system, is a POSIX and UNIX-based multi-user ,

How the operating system organizes processes　　 What is a processA process is a program that is in execution and all the resources it contains, including virtual processors, virtual spaces, registers, stacks, global data segments, and

The prompt at the end of the Linux command line has two different symbols, "#" and "$", and the code looks like this:ls Anaconda-ks.cfg Desktop Documents mine2 Pictures post-install. Log python software videosbin Dev

shutdown [options] time [warning message]System shutdown? -C cancels the previous shutdown command. It is important to note that when you execute a command such as "Shutdown-h 11:10", you can interrupt the shutdown command by pressing the "CTRL + C"

$HOME or ~//user root CD//switch directory CD: /Switch to Parent directory PWD//view current directory MV //rename or move files and directories touch ~/testfile//create file ls ~//view file list CP ~/testfile ~/testnewfile//Copy file RM ~/test

First, the process1. Concept of the process(1) Progress: process, is a computer program on a data set on a running activity, the system is the basic unit of resource allocation and scheduling, is the basis of the operating system structure.(2)

a process1.1definition of the process Narrowly defined: A process is a running instance of a program (an instance of a computer programs, which is being executed). Generalized definition: A process is a running activity of a program

1. Lsof-i: Port number2. Netstat-tunlp|grep Port numbercan see which process is consuming the specified portTools/Materials Linux,windows Xshell Method/Step "Step One" lsof-iThe lsof-i is used to display conditions that

Linux File System LearningFile Information displayls -al: Used to display all information about a file.In order: File permission type/number of links/file owner/file belongs to group/file size/File last modified time/filename, under Linux, the

The Cat command is a text output command under Linux, usually for viewing the contents of a file; Cat has three main functions: 1. Display the entire file at once. $ cat   FileName 2. Create a file from the keyboard. $ cat  >  filename can

Download the JDK package to the specified directory firstThen we enter the directory CD/... View, I stored here in the Monster folder cd/monster then ls to view the files under the folder,Unzip our JDK 7 through tar zxvf jdk-7u55-linux-i586.tar.gz,

Linux system Performance Bottleneck (IO/CPU/MEM) when it is a big expense of software tuning, but rather from the hardware to solve more reasonable, software tuning performance increase is negligible. Because the parameters have been set reasonably

17.1 IntroductionTop is very similar to the PS command. They are all used to show the process being executed. The biggest difference between top and PS is that top performs a period of time to update a running process17.2 syntaxTop [Options]Common

14.1 Linux Network configuration schematics (with virtual machines)We currently use NAT for our network configuration.14.2 viewing network IP and Gateways 14.2.1 view virtual Network editor14.2.2 Modify IP address (modify the IP of the virtual

Install Linux system after tuning and security settings:1 Turn off the SELinux feature:[[email protected] data]# sed ' s#selinux=enforcing#selinux=disabled#g '/etc/selinux/config (Use the SED command to modify the output, plus-I to modify the