Linux

One, Linux operating system installation (image form)Prepare before installation (install Linux6.9 and Linux7.3 two versions)① installing VMware Workstation (virtual machines)② System Image (mirrors.aliyun.com, can be downloaded to the mirror

For the overall structure of the operating system, the shell is the closest to the user program, is also the operating system and the user can interact with the program.The shell in its broadest sense consists of two categories:Gui:gnome,kde,xfceCli:

First, installationI am using CentOS 7, first install Git1. Download Git:wget https://Github.com/Git/Git/archive/v2.3.0.tar.gz2. Unzip after download: Tar xvf v2.3.0.tar.gz3. Enter the file directory: CD git-2.3.04. Run the following command in turn:

Take turbine as an example.First, the deployment1. Download or generate a war package (from Maven to the war package and change the name to Turbine.war)2. Copy the Turbine.war to the $tomcat_home/webapps3, add the following statement to $tomcat_home/

Need for text lookupGrep,egrep, Fgrepgrep: Search for text based on pattern and display the text lines of the review modePattern: Text Word wildcards regular the expression's meta-character combination to match the conditiongrep [Options] PATTERN

1. PrefaceA series of articles on memory management is mainly about the memory management knowledge that Chen Li teacher tells.This article will mainly introduce the knowledge of Linux memory management with the X86 architecture.2. Memory addressing

(1) Send message to User: WriteExample: Write admin (ctrl+d end)(2) Broadcast information: wallExample: Wall Hello world!(3) Test network connectivity: Ping-C Send TimesExample: Ping-c 3 192.168.1.188(4) View, set network card information:

(1) Classification of services1.RPM Packages Default Installed ServicesA. Independent serviceB. Based on XINETD services2. Service of the source packageQuerying for Installed services1.RPM Package-Installed ServicesTo view the self-boot status of

1. First in the installation process, to install the enhancements, so during the installation process, to put some basic dependencies on the software, or in the installation of enhancements will cause problems.2. The issue of sharing files between

RZ and SZ are command tools that Linux/unix with Windows for Zmodem file transfers, all using the Zmodem file Transfer protocol.Abbreviation of rz:receive ZmodemAbbreviation of Sz:send ZmodemSZ: Sends the selected file (send) to the local server,

Installing Vmtools[Email protected] ~]# Mkdir/mnt/cdrom[Email protected] ~]# mount/dev/cdrom/mnt/cdrom/[Email protected] ~]# Cd/mnt/cdrom[[email protected] ~]# lsVmwaretools-9.0.0-782409.tar.gz[email protected] ~]# CP vmwaretools-9.0.0-782409.tar.gz/

sudo this command. is to allow ordinary users, as well as root, to run operations, and these ordinary users do not need to know the root of the password.When Sudo runs the command. Just need to enter your own password, let sudo know. You are the

Rights Management:R,w,xThree types of users:U: OwnerG: Genus GroupO: Other usersChown: Change file owner (only administrators can use this command)# chown USERNAME File,...-R: Modify the owner of the directory and its internal files--reference=/path/

sudo command syntaxsudo [-bhhpv][-s][-u ][Instructions]Orsudo [-klv]Parameters-B executes the instruction in the background.-h displays Help.-H Sets the home environment variable to the new identity of the home environment variable.-K The expiration

1. View the current directory: Pwd2. Back to Parent directory: CD. /go to Level Two directory: CD. / ..　　/3.　　See what files are in the current directory: LS4.　　View the last 100 rows of logs: tail-100 catalina.out dynamic re-watch operation log:

Multi-threaded. In the properties of the mutual exclusion amount and the read-write lock. There is a property called process sharing.For mutually exclusive amounts, the method for querying and setting this property

FTP is a generic protocol that does not differentiate between systems. Know the IP, user name and password of the Linux machine.First, upload files:1, start-run, input cmd, enter2. IP address of FTP Linux machine3, enter the user name, password

Diagram of Dual-system installation for windows and Ubantu, and diagram of ubantu system installation Install Ubuntu16.04 dual-system on Win7 USB flash drive Installation can be divided into the following steps: 1. Download the Ubuntu 16.04 image

Shell script command (record), shell script command record1. Rename the file Rename a.txt under drive D as B .txt Mv D: \ A.txt D: \ B .txt2. delete an object Delete the.txt file under the D Drive Rm D: \ A.txt3. Modify and save the file content

[Familiar with Linux] basic features of bash, familiar with bashCommand history The shell process records the commands submitted and executed by the user. It can be viewed using history: [root@localhost dev]# history 1 ss -tnl 2 ifconfig