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Unix

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Raymond Ops
Raymond Ops
Jun 11, 2025 · Operations

Mastering gawk: Powerful Text Processing on Unix/Linux

This article introduces gawk, the GNU version of awk, explaining its programming capabilities, command syntax, field handling, script execution methods, and how to use BEGIN and END blocks for pre‑ and post‑processing of data streams on Unix/Linux systems.

Unixawkgawk
0 likes · 8 min read
Mastering gawk: Powerful Text Processing on Unix/Linux
Java Tech Enthusiast
Java Tech Enthusiast
May 4, 2025 · Operations

Comprehensive Linux Command Cheat Sheet

This cheat sheet compiles essential Linux command‑line tools—including navigation (cd, pwd, ls), file manipulation (cp, mv, rm, cat), searching (find, grep), permission management (chmod, chown), archiving (tar), text processing (cut), and redirection or piping—each with common options and practical usage examples for everyday system administration.

LinuxSystem AdministrationUnix
0 likes · 19 min read
Comprehensive Linux Command Cheat Sheet
Code Mala Tang
Code Mala Tang
May 4, 2025 · Operations

Master Shell Functions: From Basics to Advanced Automation

This guide explains everything about Shell functions—from basic syntax and creation, through parameter passing, return values, nesting, and recursion, to best practices, sourcing from the command line, and a real‑world file‑backup example—helping Unix/Linux users and DevOps engineers write modular, reusable scripts.

AutomationDevOpsFunctions
0 likes · 7 min read
Master Shell Functions: From Basics to Advanced Automation
Raymond Ops
Raymond Ops
May 3, 2025 · Operations

Master the Linux ‘find’ Command: Powerful File Search Techniques

Learn how to use the versatile Unix ‘find’ command to search and manipulate files by name, type, size, timestamps, and more, with detailed syntax, common options, and practical examples for printing, deleting, and executing actions on matched files.

LinuxUnixcommand line
0 likes · 7 min read
Master the Linux ‘find’ Command: Powerful File Search Techniques
Raymond Ops
Raymond Ops
Mar 26, 2025 · Operations

Mastering Linux cut: 10 Practical Ways to Extract Text Efficiently

This tutorial explains how to use the Linux cut command for text processing, covering character and field selection, range specifications, output delimiters, and integration with other Unix tools through clear examples and code snippets.

LinuxUnixcommand line
0 likes · 9 min read
Mastering Linux cut: 10 Practical Ways to Extract Text Efficiently
Raymond Ops
Raymond Ops
Feb 27, 2025 · Operations

Unlock Linux Secrets: Exploring /proc and /proc/self for Process Insight

This article explains the Linux /proc virtual file system and its /proc/self shortcut, detailing how to read process information such as command line, working directory, executable path, environment variables, memory maps, and memory image using simple shell commands.

LinuxUnixoperations
0 likes · 5 min read
Unlock Linux Secrets: Exploring /proc and /proc/self for Process Insight
Raymond Ops
Raymond Ops
Jan 27, 2025 · Operations

Mastering wrk: Install, Basic Use, and Advanced Lua Scripting for HTTP Load Testing

This guide walks you through installing the wrk load‑testing tool on Unix‑like systems, shows its basic command‑line usage with example output, and explains how to extend tests with Lua scripts for POST requests, dynamic parameters, request delays, authentication, and HTTP pipelining.

HTTP benchmarkingLua scriptingPerformance Testing
0 likes · 10 min read
Mastering wrk: Install, Basic Use, and Advanced Lua Scripting for HTTP Load Testing
Raymond Ops
Raymond Ops
Jan 19, 2025 · Operations

Master awk: Essential Commands and Advanced Techniques for Text Processing

This article provides a comprehensive introduction to awk, covering its command syntax, built‑in variables, pattern‑action processing, external variable passing, arithmetic and logical operations, advanced I/O, control flow constructs, and practical examples for effective text and data manipulation on Unix/Linux systems.

Unixawkcommand line
0 likes · 12 min read
Master awk: Essential Commands and Advanced Techniques for Text Processing
Top Architecture Tech Stack
Top Architecture Tech Stack
Dec 31, 2024 · Operations

Comprehensive Linux Command Reference and Usage Guide

A detailed reference of Linux command-line utilities covering system information, shutdown, file and directory management, searching, mounting, disk usage, user and group administration, permissions, compression, package management, backups, networking, and other essential system administration tasks.

LinuxSystem AdministrationUnix
0 likes · 31 min read
Comprehensive Linux Command Reference and Usage Guide
Java Tech Enthusiast
Java Tech Enthusiast
Nov 24, 2024 · Fundamentals

How Keyboard Input Traverses from Hardware to Software in Unix-like Systems

When a key is pressed, the keyboard controller generates an interrupt that pauses the CPU, invokes the interrupt handler and driver to translate the scan code into a character, writes it to a device file, which the X server reads and forwards via IPC to the focused window.

IPCInterruptOS
0 likes · 3 min read
How Keyboard Input Traverses from Hardware to Software in Unix-like Systems
Test Development Learning Exchange
Test Development Learning Exchange
May 29, 2024 · Operations

Linux Command Cheat Sheet: File, Directory, Process, Network, and System Management

This guide provides a concise reference of essential Linux commands for file and directory handling, file operations, permission management, searching, process control, networking, system monitoring, hardware information, log handling, text processing, and package management on both Debian‑based and RPM‑based distributions.

LinuxSystem AdministrationUnix
0 likes · 5 min read
Linux Command Cheat Sheet: File, Directory, Process, Network, and System Management
IT Services Circle
IT Services Circle
May 12, 2024 · Fundamentals

The History and Fundamentals of vi/vim Text Editors

This article traces the origins of vi from early line editors on Unix, explains why its modal design and H‑J‑K‑L navigation persist, and introduces the concise verb‑modifier‑noun command syntax that makes vi/vim a powerful, efficient tool for programmers.

HistoryText EditorUnix
0 likes · 7 min read
The History and Fundamentals of vi/vim Text Editors
Efficient Ops
Efficient Ops
Apr 21, 2024 · Operations

Boost Your Productivity with Advanced Linux Command Tricks

This article introduces a collection of practical, intermediate‑level Linux commands—including custom bash prompts, powerful find usages, permission shortcuts, alias tricks, awk data extraction, xargs chaining, variable handling, I/O redirection, and the fzf fuzzy finder—to help IT professionals work more efficiently in DevOps and everyday shell environments.

AutomationDevOpsLinux
0 likes · 12 min read
Boost Your Productivity with Advanced Linux Command Tricks
Deepin Linux
Deepin Linux
Apr 13, 2024 · Fundamentals

Understanding POSIX: Concepts, Network APIs, and Semaphore Programming in C

This article explains the POSIX standards, their role in providing portable Unix-like system interfaces, demonstrates network client‑server programming with POSIX sockets, analyzes key socket functions and the TCP three‑way handshake, and introduces POSIX named and unnamed semaphores with example code for synchronization and producer‑consumer patterns.

C++POSIXSemaphores
0 likes · 26 min read
Understanding POSIX: Concepts, Network APIs, and Semaphore Programming in C
DevOps Operations Practice
DevOps Operations Practice
Mar 2, 2024 · Fundamentals

Comprehensive Guide to Using the ls Command in Linux

This tutorial explains the Linux ls command in depth, covering its basic usage, a wide range of options for detailed listings, sorting, displaying hidden files, size units, recursive traversal, and how to interpret output columns, all illustrated with command examples and screenshots.

LinuxUnixcommand line
0 likes · 6 min read
Comprehensive Guide to Using the ls Command in Linux
DevOps Operations Practice
DevOps Operations Practice
Feb 22, 2024 · Operations

Comprehensive Linux Command Reference Guide

This guide provides a detailed overview of essential Linux command‑line utilities—including ls, mv, cp, scp, rm, touch, vi, find, grep, tar, and many others—explaining their common options, usage examples, and practical tips for system administration and everyday shell tasks.

LinuxSystem AdministrationTerminal
0 likes · 23 min read
Comprehensive Linux Command Reference Guide
Efficient Ops
Efficient Ops
Jan 7, 2024 · Operations

Essential Linux Command Cheat Sheet for System Administrators

This comprehensive guide lists essential Linux commands for system information, shutdown, file management, searching, mounting, disk usage, user and group handling, permissions, special attributes, packaging, RPM/YUM/DEB management, network utilities, and Vim editing, providing clear examples and options for each task.

LinuxLinux CommandsSystem Administration
0 likes · 39 min read
Essential Linux Command Cheat Sheet for System Administrators
IT Services Circle
IT Services Circle
Jul 10, 2023 · Fundamentals

The Story Behind Unix Epoch Time and the Y2K38 Problem

This article recounts how Ken Thompson and Dennis Ritchie devised the Unix Epoch Time as a simple integer timestamp, explains its advantages, the 32‑bit limitation leading to the Y2K38 issue, and describes the transition to 64‑bit timestamps in modern systems.

32-bit64-bitOperating Systems
0 likes · 6 min read
The Story Behind Unix Epoch Time and the Y2K38 Problem
Laravel Tech Community
Laravel Tech Community
Jun 28, 2023 · Fundamentals

Comprehensive Guide to Using AWK for Text Processing

This article provides a thorough introduction to the AWK language, covering its basic syntax, common usage patterns, operators, built‑in variables, and numerous practical examples for processing and extracting data from text files.

Data ExtractionUnixawk
0 likes · 10 min read
Comprehensive Guide to Using AWK for Text Processing
IT Services Circle
IT Services Circle
Jun 24, 2023 · Fundamentals

The Evolution of Microsoft’s Operating Systems: From Xenix to Windows NT

This article chronicles the historical development of Microsoft’s operating systems—from acquiring Unix and creating Xenix, through the partnership with IBM that produced MS‑DOS, the divergent paths of OS/2, Windows, and NT, and the eventual dominance of Windows and its later shift toward cloud computing—highlighting strategic decisions, technical challenges, and market forces that shaped the modern PC ecosystem.

HistoryMicrosoftOperating Systems
0 likes · 7 min read
The Evolution of Microsoft’s Operating Systems: From Xenix to Windows NT