Linux

14.1 W: Detailed query for users who are logged on to the current computer 14.2 Who: Display simple information for users who are logged on to the current computer 14.3 WhoAmI: Displays the user name associated with the current valid ID 1

Linux Environment View "network traffic" tools and commands 1. nethogs: View traffic consumption by process [Email protected] ~]# yum-y install Epel-release.noarch[Email protected] ~]# yum-y install nethogs.x86_642. Iptraf: View traffic by

Linux is a file, bird brother called the archives. Since it's a file, the file has the following features.1. User of the file2. Permissions of the file3. Types of Archives1. User of the fileFiles can be managed, modified, and queried by people of

I. Process ManagementForeground process: Generally refers to a process that occupies standard input and/or standard outputBackground process: Do not occupyThe default open process is the foreground processCTRL + C InterruptCTRL + Z transfer from

Log in to the Linux system after entering the password, you want to delete ctrl+u Delete all the input before, (is uppercase U)IP a view IP (full ifconfig addr)Systemctl Restart Networkmanager.service Start commandDhclient dynamic acquisition of IP

The cat command is used to print the connection file to the output deviceCat is the basic Text Output command for Linux and is typically used to view the contents of a file.GrammarCat (Parameters) (option)-N or--number: Numbers the number of rows

1 Get root access switch root2 Install E2fsprogs, some Linux comes with, some do not own, need to install3 Debugfs/dev/sda3 (the file is in the same partition)4 Wait until debugs: Enter Lsdel (lists the deleted files) please wait5 depending on the

Linux monitoring Platform (ii) Active mode and Passive mode Add Monitoring Host Add a custom template Working with garbled characters in graphics Active mode and Passive mode Active or passive is relative to the client

Import java.io.UnsupportedEncodingException;Import java.security.InvalidKeyException;Import java.security.NoSuchAlgorithmException;Import Java.security.SecureRandom;Import javax.crypto.BadPaddingException;Import Javax.crypto.Cipher;Import

Selenium assertions and exception type Parsing Selenium assertions and exception type parsing. Assertion: Verify that the application status is the same as expected. Common assertions include verifying the page content, such as whether the title is

Introduction to Tomcat in the SSH framework tutorial, and tomcat in the ssh framework The introduction to Tomcat in the SSH framework tutorial. Before introducing Tomcat, I would like to introduce IIS first, because the Tomcat to be introduced today

MySQL master-slave principle and configuration, MySQL master-slave principle Configuration Infi-chu: Http://www.cnblogs.com/Infi-chu/   MySQL master-slave configuration and principles 1. Environment selection: 1. Centos 6.5 2. MySQL 5.7   Ii. What

Install the Qt4.8.5 + Qt Creator instance in Ubuntu and ubuntuqt4.8.5Easy installation Sudo apt-get install build-essential. Sudo apt-get install qt4-dev-tools qt4-doc qt4-qtconfig qt4-demos qtcreator This method is not necessarily the latest

Redis Master/Slave + KeepAlived for high availability, rediskeepalived Redis is a popular non-relational database that supports a wide range of data types, multi-thread high concurrency support, redis runs in memory with faster read/write. Because

KeepAlived (III): keepalived + haproxy, and keepalivedvrrp Configuration items when keepalived uses scripts for health check. For example, keepalived + haproxy achieves high availability of haproxy. Keepalived is divided into vrrp instance heartbeat

Array knowledge points in Linux C notes, linux Array 1. One-dimensional array, two-dimensional array, character array. 2. When an array is passed as a parameter to a function, the size of the array cannot be obtained through sizeof. When an array

Arch Linux installation (BIOS) tutorial, archlinux I. Introduction Arch linux is a lightweight and simple Linux release. "Simplicity" is defined as "avoiding unnecessary or complex modifications", that is, it is defined by developers rather than

Rmdir command usage introduction for one linux Command every day, And rmdir command sharing for linux commands Rmdir command. Rmdir is a common command used to delete an empty directory. A directory must be empty before it is deleted. (Note that

Dockerfile: create an image Template Dockerfile is a configuration file in text format. You can use Dockfile to quickly create a custom image. Dockerfile is composed of a line of command statements, and supports comment lines starting. # Generally,

Install and Configure NFS servers in Ubuntu As the lab project needs to establish NFS on CephFS, record the installation and configuration process of the NFS server in the Ubuntu environment. 1. Introduction to the NFS service:NFS is short for