Linux

Network Monitoring tools Ifstat and Iftop use Yum to install successfully and need to be installed using source code mode. Note: Installation with source code requires a C compilation environment GCC.1, installation Ifstatwget

1 HDD Block and inode details 1.1 Sector (sector) and block (block)1) Minimum storage unit of the hard disk: sector (sector), each sector is stored 512 bytes; the operating system reads multiple sectors at once, that is, one-time reads multiple

Tar-C: Create compressed archives-X: Unzip-T: View content-r: Append files to the end of a compressed archive file-U: Update files in original compressed packageThese five are stand-alone commands, which use one of the compression decompression, and

Ln-s/opt/applications/fj213_ma-auth_mysql/auth/ /opt/app/tomcat8.5/ma-auth/webapps/ma-auth Creating a shortcut　　RM eg:rm-rf apache-tomcat-8.5.33/ Delete apache-tomcat-8.5.33 All files rm Delete command- r recursive Delete- f Force Delete-I

As you know, computer programming language is usually divided into three categories: machine language, assembly language and high-level language. High-level languages need to be translated into machine language to perform, and translation is divided

Shutting down the firewall[[email protected] ~]# systemctl stop firewalld[[email protected] ~]# systemctl disable firewalld[[email protected] ~]# sed -ri ‘s/(SELINUX=).*/\1disabled/g‘ /etc/selinux/config[[email protected] ~]# setenforce 0Configuring

First of all, I came up with this problem when installing and running VMware in the absence of linux-headers-4.18.0-041800rc5-generic this fileIt reminds me of the last time I buried the pit when I upgraded the Ubuntu16.04 kernel, this file is not

Sed:stream Editor, line editors:Usage: sed [option] ... ' Script ' Inputfile ...This shows the contents of the/etc/fstab, which will be used laterCommon options: -N: Do not output the contents of the mode to the screen -e: Multi-point

Memcache is a distributed cache system characterized by Key-value storagefirst, in the Linux compilation installation Memcache, Redis and so on, need gcc,make,cmake,autoconf,libtool and other tools, directly using Yum installation can:Yum install

Fault:File system/Home partition encountered mount:structure needs cleaning error, fault partition of the information, how to save the file and repair the partitionAnalysis:1. The host often experiences a power-on restart2. The system is not loaded

Introduction to process-related knowledgeProcess definition:　　A running program is a processTask struct:　　The fixed format for kernel store process information is called a task struct,task struct that records information such as the next hop

1. VI Editor Three modes:Command mode VI filename (1.) Positioning: H: Move one character to the left J: Move down one character K: move one character up L: Move right one character $: moves to end of line 0: moves to the beginning of

Between the virtual machine and the host, the operation has been pressed Ctrl+alt, looks more troublesome.So just install a tool to make our operation more simple, I have vmtools installation steps to solve.Locate this tab in the navigation bar and

1 #ifndef __print_h_ 2 #define __print_h_ 3 4 void PRINT (char* fmt, ...); 5 void printch (char ch); 6 V OID printdec (int dec), 7 void Printflt (double flt), 8 void printbin (int bin), 9 void printhex (int hex);

Chattr changing file properties-R Recursive processing-V Set file or directory version-V Show Instruction execution process+ Open this Item property of a file or directory- Close the Item property of a file or directory= Specify this item property

Single Master model Ipvs example configuration keepaliveExample of a highly available Ipvs cluster: Modifying the keepalived configuration fileModify Host: 192.168.234.27 's keepalived configuration file1[Email protected] ~]#

1: Location of package storage under Media/centos_6.9_final/packages folder2.RPM is the acronym for the Red Hat package Manger.2.1 Common Commands-I: Install software-U: Upgrade (update) updates-E: Delete (Erase)-V: Displays detailed processing

DD: Delete the entire row where the cursor is located (common)Ndd:n is a number. Delete the down-n line where the cursor is located, for example, 20DD to delete the 20 line below the cursorD1G: Delete all data from the first row of the cursorDG:

Compiling and booting the linux-2.6.32 kernel on Ubuntu 14.04Environment$ cat/etc/issueUbuntu 14.04.5 LTS \ \l$ uname-aLinux Ui386 4.4.0-31-generic #50 ~14.04.1-ubuntu SMP Wed Jul 01:06:37 UTC i686 i686 i686 gnu/linux[Change gcc-4.8 to gcc-4.4,

The LS command is the most common command for Linux virtual machines, and LS is the abbreviation for list, which is used to display the contents of the specified working directory.First, the syntax of the next LS command is explained[-Alrtafr][name..