Linux

Common file DirectivesLS display file or directory-l parameter, which is used to display the file details-a parameter to list all the documents under the directory and the Hidden A (all)mkdir Creating a folder-P is used to create a multi-level

Due to the company's wonderful needs, all development users need to open all the server can only view permissions, combined with existing jumpserver to achieve expansion, build jumpserver ellipsis, push a normal userThe next operation is in the

How to count the number of rows in the query result in linux (wc command Introduction) It is often necessary to make statistics on the number of rows in the result of the current command. The number of rows in a row is relatively primitive. In fact,

Install and use the website and interface performance testing tool webenche Stress testing is an important task in O & M. For example, before a website goes online, the quality of data indicators will directly affect the user experience. However,

Summary of commands for creating, copying, cutting, renaming, clearing, and deleting files or folders in linux Summary of commands for creating, copying, cutting, renaming, clearing, and deleting files or folders in linux. I. Create a

In vim, the direction key is converted to a B C D. In some cases, editing in vi/vim may be unpleasant. For example, inputting direction keys in vi/vim is sometimes converted to a B C D, or press Enter, but it is converted into other letters. What

Vim DELETE command Summary: one line, one character, word, the first character in each line Vim DELETE command operation summary. X deletes characters under the current cursor.Dw deletes the remaining part of the word after the cursor.D $ Delete

How to Use the Linux grep command to find all files with specific textPurpose This article provides useful tips on how to find a specific directory or all files containing a specific word or string in a Linux File System.Conventions #-Directly run

View File encoding in Linux and perform file encoding conversion If you need to operate files in Windows in Linux, you may frequently encounter file encoding conversion problems. In Windows, the default file format is GBK (gb2312), while Linux is

How to modify the root password of CentOS 6 & 7 Linux root Password modification is not like Windows Password modification and Retrieval. If Windows login password is forgotten, an intervention tool is required to solve the problem. The password

Linux Command helpHelp (get brief help information) L internal command: help command L external command: command -- help L how can I differentiate whether a command is an internal command or an external command? Type command 1) command is a shell

Prevent automatic suspension and enable screen protection when watching videos in Ubuntu This is a quick tutorial to show you how to prevent the Ubuntu Desktop from automatically disabling or locking the screen when watching the video. Although

How to simulate system load in Linux System Administrators usually need to explore the impact of different loads on application performance. This means that we must repeatedly create loads. Of course, you can use dedicated tools, but sometimes you

Important Docker commands for Tom In an earlier tutorial, we learned how to install Docker on RHEL CentOS 7 and create a docker container. In this tutorial, we will learn other commands for managing docker containers.Docker command syntax $ docker

Linux Regular Expression BasicsI. Introduction to Regular Expressions Regular Expressions are a concept of computer science.Regular Expressions use a single string to describe and match a series of strings that match a certain syntax rule.In many

Analysis of HTTPS principles The HTTPS (Hypertext Transfer Protocol Secure) Protocol is used to provide Secure Hypertext Transfer Services. Essentially, it is the HTTP Protocol on the SSL/TLS layer, that is, the so-called "HTTP over SSL/TLS ". More

Installation and configuration of Apache + Resin server in LinuxI. Preface Resin is a product of CAUCHO. It is a very popular engine that supports servlets and jsp. It is very fast. It provides excellent support for servlet and JSP, and excellent

Linux single-user CS model TCP communication full comments ManualLinux single-user CS model TCP communication full comments manual server description To implement a simple Linux single-user CS communication, the client sends a string and the

Nginx default virtual host, user authentication, Domain Name Redirection Nginx default virtual host defines the default virtual host configuration file, add include vhost/*. conf under http Create a directory under/usr/local/nginx/conf/ # Mkdir

Why IPV6 deployment Why IPV6 deployment · Limitations of IPv4: 1. Limitations of address space: the IP address space crisis has been around for a long time and is the main driving force for IPv6 upgrade. 2. Security: IPv4 has no security at the