Programmer Group

1. What is md5sum MD5 full name is message digest algorithm. This algorithm calculates information of any length bit by bit, and generates a "fingerprint" (or "message digest") with a binary length of 128 bits (hex length is 32 bits). The possibility of different files generating t ...

rpm can realize fast and simple installation of programs (compared with compilation and installation), but rpm can't solve dependency by itself, so many tools come into being to solve dependency automatically, among which yum is one of them. yum solution to dependency: There must be a file server where all the rpm packages and the package rel ...

Case demonstration: 1, In the linux environment, create three nodes on one machine, and create a replica set for the purpose of testing 1. First create three different data storage folders [root@wugenqiang db]# cd /usr/local/mongodb/data/db [root@wugenqiang db]# mkdir rs0-0 [root@wugenqiang db]# mkdir rs0-1 [root@wugenqiang db] ...

The rise of deep learning has brought us new efforts and trial directions, and also brought higher requirements for the computing power of machines. GPU acceleration is the key to improve computing speed, but for most people, buying a good video card is too expensive. If you are not a local tyrant, i ...

This paper mainly introduces the method of using fast and slow pointers to access the intermediate nodes. As for other operations of the linked list, it has been written before, which will not be introduced here #include<stdio.h> #include<stdlib.h> typedef struct student{ int score; char name[50]; }student_ ...

shell programming condition test Shell Conditional Judgment InitialShell branch if statementShell Loop for StatementShell branch case statementSelect List Select LoopShell loop controls continue,break,exitShell loop while statement Shell Conditional Judgment Initial [] Represents a conditional test, ...

introduce Last week, I was confronted with a colleague about an interface. My front-end colleague asked me if I had written the interface document incorrectly, how many exception tags are on an order, and should I not return an array?Why only one number was returned. Because this interface is a call to other micro services, I am also confused. ...

brief introduction In the daily development under linux, we often need to process and analyze the json format data. jq Is an open source JSON format data processing tool, it provides a lot of flexible syntax, very powerful. install macOS: brew install jq Ubuntu apt-get install jq Other reference Official website jq syntax Basic usage Suppose t ...

k8s builds a Manager component for the management of container exploration worker. This component is responsible for the management of underlying exploration worker, caching the current state of container, and synchronizing the current state of container. Today, we will analyze some of its core components 1. Implementation of core principles T ...

Author: CoolFire [coolfires@hotmail.com] (2001-10-12 15:00:00) CoolHC Volume 1 By CoolFire Author E-Mail: coolfires@hotmail.com Lin Zhenglong, a famous hacker in Taiwan, is the leader of Chinese hackers. Won COG information security Lifetime Achievement Award in 2011Lin Zhenglong Baidu Encycl ...