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This article mainly explains how to crack the login password on the Ubuntu system. The Ubuntu version used in this article is 18.04, and the GNU GRUB version used is 2.02.

Check Linux running services. First view the processes running in the system. If you need to check all the processes currently running in the system, you need to use the following command.

If you want to use linux system resources, you must apply for an account from the administrator and open the corresponding permissions at the same time.

The Linux operating system is very cumbersome to manage multiple users, so it becomes simple to manage users with the concept of groups.

Linux systems also have a server version. Generally, the same server will be used by many people, so an ordinary user will be created for everyone who uses it.

For every Linux learner, understanding the directory structure of the Linux file system is an important step to learn Linux well.

Java Virtual Machine Tutorial. Java Virtual Machine is a virtual machine, an abstract computer with its own ISA, its own memory, stack, heap, etc.

Due to temporary overload or temporary maintenance, your web server is currently unable to handle HTTP requests. The implication is that this is a temporary situation.

What I want to introduce to you this time is to build your own VPN server.It is well known that VPN (Virtual Private Network) can help you over the wall and do things that you can't do on the domestic network.

This article takes PuTTY software as an example to introduce how to use remote login Linux instance on a local computer in a Windows system.

I recommend two lightweight web frameworks that are more suitable for writing web service interfaces: Grape and Sinatra. Click to learn more.

How to use Nginx to build an rtmp video streaming server (Ubuntu 16.04) Preparations Install the dependent packages required by nginx Install mercurial to support the hg command.

The structure of the Linux file system is a tree structure. The entry starts from /. Understanding the structure of the Linux file system is one of the basic knowledge points that we need to control.

The file system of Linux is very different from the file system of MS-Windows. I will not say more about the file structure of Microsoft Windows system here.

Public Key and Private Key are a key pair (that is, a public key and a private key, that is, asymmetric encryption) obtained through an encryption algorithm.

I don’t know how many times Ubuntu has been installed, and the sharing problem has not been resolved. Recently I have to reinstall Ubuntu 16.04, which happened to be recorded once.

Apache http server installation and configuration notes: Apache official website no longer provides windows msi or exe installation version after 2.2. Now Apache http server has two branches 2.2 and 2.4

Java Update is a feature that keeps your Windows computer up to date with the latest Java release. After enabling automatic updates, the system will periodically check for new versions of Java.

In the development of the Linux kernel, various Linux distributions have played a huge role, and it is they that promote the application of Linux, so that more people begin to pay attention to Linux.

Linux follows the GPL copyright license agreement. Because of the GNU development philosophy, Linux has achieved rapid development. What we generally refer to as Linux should actually be GNU/Linux.