Business Process Management

Mastering Parallel Tasks with Multiprocessing in Python

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Mastering Parallel Tasks with Multiprocessing in Python

In Python, the `multiprocessing` module is part of the standard library, designed to support parallel computing and multi-process programming. Unlike threading, `multiprocessing` achieves task parallelization by creating independent processes, which not only bypasses the limitations of Python’s Global Interpreter Lock (GIL) but also fully utilizes multi-core CPUs to improve program execution efficiency.Today, we will briefly … Read more

A Single Line of Code in Linux Can Crash the System Instantly, and 90% of People Don’t Know

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A Single Line of Code in Linux Can Crash the System Instantly, and 90% of People Don't Know

The classic Bash fork bomb command, which causes the system to crash by exhausting system resources: .(){ .|.&};. The way this command works is by recursively creating new processes to exhaust system resources: .() defines a function named . The function content .|.& means: call itself (.) to create a child process through a pipe … Read more

Implementing a Process Management System in Python

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Implementing a Process Management System in Python

Effect Diagram Hello everyone! Today I would like to introduce a particularly useful Python project – the Process Manager. This tool helps us view the processes running on the computer and perform some operations on them, such as terminating processes. The entire code structure is very clear, layer by layer, from initialization to interface construction, … Read more

Common Linux Commands Notes

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Common Linux Commands Notes

1. Quick Reference Table for Linux Paths Syntax Meaning Example Description <span><span>/</span></span> 🟥 Root Directory <span><span>/etc/hosts</span></span> Starting point for all paths <span><span>.</span></span> 🟩 Current Directory <span><span>./script.sh</span></span> Indicates “in the current directory” <span><span>..</span></span> 🟨 Parent Directory <span><span>../file.txt</span></span> Parent directory of the current directory <span><span>~</span></span> 🟦 Current User’s Home Directory <span><span>~/docs</span></span> Equivalent to <span><span>/home/username</span></span> <span><span>~user</span></span> 🟪 Specified … Read more

Linux Command Line: A Practical Guide to Mastering the ps Command

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Linux Command Line: A Practical Guide to Mastering the ps Command

1. Basics of the ps Command ps (Process Status) is the core command in Linux systems for viewing process status, functioning like taking a “snapshot” of the running system, instantly presenting key information about all active processes. Syntax Format The ps command supports three styles of options, and beginners often make mistakes by mixing formats. … Read more

Experiencing Disk I/O Lag on Linux? Step-by-Step Guide to Identify the Culprit Process!

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Experiencing Disk I/O Lag on Linux? Step-by-Step Guide to Identify the Culprit Process!

Experiencing Disk I/O Lag on Linux? Step-by-Step Guide to Identify the Culprit Process! Have you ever encountered a situation while using Linux where the disk suddenly becomes sluggish, the system response is delayed, and even entering commands takes forever? It is very likely that a certain process is excessively reading and writing to the disk, … Read more

Linux Guide (Part 10): Files, Everything is a File

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Linux Guide (Part 10): Files, Everything is a File

What is a file? 01 In the Linux system, a file is an abstract representation of various resources (such as data, hardware devices, inter-process communication, etc.), following the principle of “everything is a file.” Whether it is ordinary data, directories, hardware devices, or inter-process communication interfaces, they all exist in the form of files and … Read more

Why Linux is the ‘Second Language’ for Programmers

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Why Linux is the 'Second Language' for Programmers

Word count 1223, reading time approximately 7 minutes What is your computer really ‘thinking’? When I first entered the industry, I was completely bewildered by a server running Linux: the screen was filled with dense command lines, with no familiar graphical interface, and I couldn’t even find the files. However, when I first learned to … Read more

Comprehensive! Selected Analysis of 100 Linux Interview Questions: Advanced Edition | Mastering Kernel Tuning and 24 Core System Performance Issues

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Comprehensive! Selected Analysis of 100 Linux Interview Questions: Advanced Edition | Mastering Kernel Tuning and 24 Core System Performance Issues

If mastering basic commands is the entry point and being proficient with operational tools is intermediate, then true advanced Linux capability comes from your ability to gain insights into the system’s underlying architecture and precisely control performance bottlenecks.。 In high-concurrency business environments, where server resources are tight and system anomalies occur frequently, the ability to … Read more

An Introduction to Operating Systems for Beginners

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An Introduction to Operating Systems for Beginners

Source: Fresh Date Classroom Original Author: Little Date Jun We use operating systems every day. Windows, Linux, Android, and iOS are all classic operating systems. With them, we can better utilize hardware terminal devices like computers and smartphones. So, what is the essence of an operating system? What functions and features does it have? What … Read more