This guide provides a comprehensive overview of Linux operating systems, covering core concepts such as file system hierarchy, essential commands for navigation, file manipulation, user and group management, permission settings, process control, and software installation methods.
This article explains how to monitor the /Volumes directory on macOS to detect USB insertion, then uses Python's os, shutil, and re modules to recursively walk the USB file system, filter files by type, size, and modification time, and automatically copy selected files to a local folder.
This article provides a concise tutorial on Python's standard library modules for interacting with the operating system and handling files, covering os, os.path, shutil, glob, pathlib, io, tempfile, fileinput, pickle, csv, zipfile, and tarfile with example code snippets.
This article compiles detailed backend interview notes covering salary expectations, OS stack vs heap differences, process and thread concepts, DNS resolution, ping protocol, MySQL indexing and locking mechanisms, Redis performance characteristics, Kafka throughput optimizations, and Docker's underlying implementation.
An in‑depth guide explains what a program and a process are, details the Linux task_struct fields, describes process states, creation functions like fork, vfork, clone, kthread_create, the do_fork core, copy‑on‑write, termination methods, and the roles of zombie, orphan, and init processes.
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.
This article delves into operating system memory management, covering continuous and fragmented allocation strategies such as First‑Fit, Next‑Fit, Best‑Fit, and Worst‑Fit, explains swapping and overlay techniques, analyzes page replacement algorithms like Optimal, FIFO, and LRU, and offers practical Go implementations and optimization tips.
This tutorial explores nine different Python approaches—including shutil, os, threading, and subprocess—to copy files, explaining their behavior, performance implications, error handling, and platform considerations so you can choose the most suitable method for your application.
This article provides practical code examples for using key Python standard library modules—including os, sys, json, datetime, re, math, collections, urllib, random, and logging—to perform common tasks such as file operations, system info, data parsing, date handling, pattern matching, calculations, data structures, web requests, random generation, and logging.
This article explains how to use the C standard library functions setjmp and longjmp to create a lightweight cooperative multitasking scheduler without timers, covering their mechanics, stack handling, task creation, time‑slice yielding, and provides complete example code and a Git repository link.
This article introduces ten Python libraries—including os, pathlib, shutil, glob, zipfile, tarfile, csv, json, configparser, and logging—that simplify file handling tasks such as checking existence, reading, writing, copying, compressing, and logging, and provides clear code examples for each.
This article explains how to use Python and pandas to read a reference spreadsheet, iterate through Excel files in a folder, generate month‑based names with identifiers, and batch‑rename the files, while also noting a limitation of the original month‑extraction logic.
This article walks through a Python community question about automating office tasks, presents original code for copying Excel files, offers an improved script that recursively moves .xlsx and .xls files, and explains how to adapt the solution for broader file‑automation scenarios.
This guide shows how to use Python's os and glob modules to automatically locate every Excel file in nested subfolders, providing step‑by‑step code examples and explanations for extracting file paths and adding headers to each workbook.
This article reviews the tiny10 lightweight Windows 10 build, compares its market share and size to the standard OS, details the download and installation process, discusses language‑pack issues, evaluates system components and performance, and concludes with usage recommendations.
This article presents the ten most frequently used Python file‑handling functions, explaining how to create, open, read, write, copy, move, rename, and delete files with code examples and tips on proper resource management.
This tutorial explains how to create a Python program that runs in the background, monitors the /Volumes directory for newly mounted USB drives, and automatically copies only selected files based on size, type, or modification date to a local folder.
This article compares Windows 11 and Linux desktop experiences, covering installation ease, hardware compatibility, user interfaces, software ecosystems, gaming support via Proton, and system maintenance, to help readers decide whether Linux can serve as a daily primary OS.
A comprehensive Phoronix benchmark on a Raspberry Pi 400 reveals that the new 64‑bit Raspberry Pi OS consistently outperforms its 32‑bit counterpart, delivering performance gains ranging from modest single‑digit improvements to massive jumps of over 1300% depending on the workload.
This article explains the Android Binder inter‑process communication mechanism, covering its definition, why Android adopts it over traditional Linux IPC methods, and its advantages in performance, stability, and security, while also detailing the underlying Linux concepts and communication steps.
Python’s pathlib module provides a simple, cross‑platform way to construct and manipulate file paths, eliminating the need for manual slash handling or os.path.join, and offering convenient features such as path arithmetic, file existence checks, and easy conversion between Unix and Windows path formats.
This guide demonstrates multiple Python techniques for automatically retrieving the current directory, its parent, and grand‑parent paths using the os module, helping developers avoid manual path changes when working across multiple projects.
This article explains how zero‑copy techniques such as mmap, sendfile, and splice reduce CPU involvement in data transfer by avoiding memory copies between kernel and user spaces, and shows how Java NIO and Netty implement these mechanisms for high‑performance backend I/O.
This article details the leaked Windows 10X RTM build, explains how to set up the VHDX image in Hyper‑V, and walks through the system’s unique UI, task‑bar, start menu, operation center, resource explorer, split‑screen, shortcut keys, anti‑theft features, and app compatibility limitations.
This tutorial shows how to use Python's os, shutil, and zipfile modules to batch‑compress thousands of folders, delete the original files, and produce zip archives automatically, turning a labor‑intensive task into a one‑minute automated process.
This article explains the types and default actions of Linux signals, distinguishes between standard and real‑time signals, and demonstrates how to use the kill and trap commands with practical shell script examples for signal handling.
This article explains Linux signal concepts, the three ways a process can handle signals, provides a concise reference of common signals with their default actions, and demonstrates practical usage of the kill and trap commands through clear shell script examples.
This tutorial walks you through building a Python script that scans a given directory, extracts all files, and automatically organizes them into separate folders based on their file extensions, demonstrating practical use of the os, glob, and shutil standard libraries.
This article explains four Python techniques—os.system, os.popen, the commands module, and subprocess—for running shell commands, comparing their ability to capture output, return status, and recommending subprocess as the most flexible modern solution.
This article explains the traditional copy‑based data transmission process, introduces the zero‑copy technique—including basic sendfile(), scatter/gather DMA and mmap support—shows how it reduces context switches and copies, and demonstrates its practical use in Kafka and Spark for high‑throughput workloads.
This guide walks you through Python's built‑in open() function, file modes, reading and writing techniques, directory traversal with os.walk, and a series of practical scripts including a triangle printer, number‑guessing game, log analysis, IP counting, prime number generator, command‑line argument handling, web page fetching, process memory aggregation, port monitoring, and SNMP‑based CPU and network traffic monitoring.
This article presents a concise collection of twelve fundamental Python techniques—including regex substitution, directory walking, list sorting and deduplication, dictionary sorting, conversions between dict/list/string, time manipulation, getopt argument parsing, formatted printing, numeral base conversion, executing system commands, handling Ctrl+C/Ctrl+D signals, and file reading/writing—each illustrated with ready‑to‑run code snippets.
