Linux

linux  Server Initialization optimization Script----------------------------------------------------------------------------------------# !/bin/bash## writes by tian## ver 1.1.0 at 20180705# Close  ctrl +  alt + del  (linux 6.x ) echo  "Off

Ls-l command: View user file detailsAfter the command, the display:The meaning of each part:-RW------. which. Represents a file created in a secure environment. The preceding section is the permission information, a total of 10 bits,1 indicates the

Sometimes we have to use scripts to edit the text, see the following topic.Title Requirements:Add the following two lines after the fifth line of text document 1.txt (assuming that the number of file lines is greater than 5):# This is a test file.#

How to release buffer memoryBuffer: Prepares data to be written to disk from memoryCache: Writes the memory data from the disk and is read quickly by the corresponding service.1) Clean Pagecache (page cache)Echo 1 >/proc/sys/vm/drop_cachesOrSysctl-w

Several ways to query the IP of the extranet under Linux. Curl Plain Text Format output:curl icanhazip.comcurl ifconfig.mecurl curlmyip.comcurl ip.appspot.comcurl ipinfo.io/ipcurl ipecho.net/plaincurl www.trackip.net/iCurl JSON format

As we all know, sometimes we use links to make reference operations to save space. Similarly, there are also at the system level. In the Windows family, we call this a shortcut, and in Linux we call it a link (basically all the same, which may be

First download the JDK version you want on the JDK website, and after the download is complete, place the JDK installation package that you need to install into the folder specified by the Linux system, and the command goes to that folder:[Email

Regular expressions: Formal notation, regular notation (Regular expression) regular expressions are described using a single string, matching a series of strings that conform to a rule of a sentence.1) command format;grep "Regular" string file2)

Basic command explanationPressing the TAB key after entering 1-2 characters on the LINUX command platform automatically complements the next part (provided that you have this thing, for example, if you have Tomcat, enter Tomcat to press TAB).The PS

今天，决定重拾Linux，其实已经看了几天了。只是今天才想起要创建一个blog。I do not know how many people are still like me to regain. I hope I can stick to it. Must certainly be. For a better future.Many times give up and start again, and sometimes have no confidence in

1. Tree-like directory structure diagram　　2. Introduction of Catalogue Directory Describe / root directory /bin/ Store binary executables such as: Cat, LS, CP, etc. /boot/

The Linux bzip/bunzip2 command is the unzip program for the. bz2 file.BUNZIP2 can decompress compressed files in. bz2 format. The BUNZIP2 is actually a bzip2 symbolic connection, and the BUNZIP2 performs the same as bzip2-d.bZIP Common Command

gcc/g++ Order requirements for libraries when linking-ldir Add directory dir to the list of directories to be searched for-l.-llibrary-l Library Search the library Nam Ed Library when linking. (The second alternative with the library as a separate

PWD shows the current path, which is the current locationCD Switch Path command. Current pathCD: Parent Directorycd~ if it is the root user, then go to the current user's home directory, if it is a normal user, then go to the home directory of the

First, network configurationSolution for resolving clone virtual machine NIC name non-eth0Vim/etc/udev/rules.d/70-persistent-net.rulesDelete the Name=eth0 line#PCI device 0x8086:0x100f (e1000)subsystem== "NET", action== "Add", drivers== "? ",

BrieflyLinux is a set of free and open source Unix-like operating systems, born on October 5, 1991 (the first officially announced), by the Finnish students Linus Torvalds and later joined the many enthusiasts jointly developed.Linux is a POSIX and

Just contact the Linux server, Nginx configuration is a bit heinous, the old uninstall the reload.UnloadingLinux has a series of software managers, such as the common Linux under the Yum, Ubuntu under the Apt-get and so on. With these software

First, view 1.ip A//Simply view the network card IP information for the current host1: lo（本地回环网卡）: mtu 65536 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/1

Turn from: 80655902GSL Introduction: The GNU Scientific Library (GSL) is an open source scientific computing function library, which has a large number of mathematical calculation functions, very powerful.1) Download GSL installation file:

Prepared by Brother Xiaomei and is strictly prohibited for any commercial use without permission.June 30, 2018In everyday Soc development, we often need to transfer files between Windows and Linux systems, such as a Linux application written in a DS-