Mastering Crontab: A Comprehensive Guide to Scheduled Tasks in Linux

Mastering Crontab: A Comprehensive Guide to Scheduled Tasks in Linux

Note: This article is an original work by Liu Feng from Anya Technology. Please respect intellectual property rights. When sharing, please indicate the source. No plagiarism, adaptation, or unauthorized reproduction is accepted. Introduction In the world of Linux, how can you make your computer automatically back up data every night, clean temporary files every Monday … Read more

The TCP/IP Three-Way Handshake and Four-Way Teardown Process

The TCP/IP Three-Way Handshake and Four-Way Teardown Process

Hello everyone, I amAms, Today I will talk about theTCP/IPThree-Way Handshake and Four-Way Teardown Process Analysis A virtual connection is established through a three-way handshake. 1. (Client) > [SYN] > (Server)IfClientandServerare communicating. WhenClientwants to communicate withServer,Clientfirst sends aSYN (Synchronize)marked packet toServerto request a connection.Note: A SYNpacket is a TCP packet with only the SYN flag … Read more

Deploying ROS2 on Orange Pi 3 LTS: A Step-by-Step Guide

Deploying ROS2 on Orange Pi 3 LTS: A Step-by-Step Guide

1. Download System Image Here we need to install the humble version of ROS2, which requires ubuntu 22.04 version of the system. Download the Orange Pi image: http://www.orangepi.cn/html/hardWare/computerAndMicrocontrollers/service-and-support/Orange-Pi-3-LTS.html Click on the Ubuntu image, choose either the Jammy desktop version or server version, as shown in the image below 2. Install System Image Insert the card … Read more