Focused on sharing practical Linux technology content, covering Linux fundamentals, applications, tools, as well as databases, operating systems, network security, and other technical knowledge.
This article introduces BusyBox as a compact collection of Unix utilities for embedded Linux, outlines its key features, three usage methods, compilation and installation steps, common pitfalls, and demonstrates practical examples such as filesystem repair and network configuration.
A developer built a Raspberry Pi‑based device that uses machine‑learning audio classification to detect Reggaeton music and then transmits disruptive Bluetooth packets, forcing the offending speaker to shut down, with full hardware schematics, software setup, and code examples provided.
This article explains the CPU as the computer’s brain, describing its transistor‑based construction, core functions of fetching, decoding and executing instructions, internal components like the control unit, ALU and registers, the program counter, branching, flag registers, function calls, memory addressing, and the five‑stage instruction execution pipeline.
This article walks through TCP from the physical layer up to congestion control, explaining MAC and IP addressing, sockets and ports, reliable transmission mechanisms like stop‑and‑wait and sliding windows, the three‑way handshake, four‑way teardown, UDP differences, routing, packet fragmentation, and security considerations.
The article explains Linux kernel’s four I/O schedulers—Noop, CFQ, Deadline, and Anticipatory—detailing their queue management, merging and sorting mechanisms, priority handling, and hardware‑specific suitability, helping readers choose the appropriate scheduler for spinning disks, SSDs, or database workloads.
This article compiles 18 practical Bash scripts covering tasks such as verifying file consistency across servers, scheduled log cleaning, network traffic monitoring, numeric analysis in files, FTP operations, Nginx error handling, process monitoring, bulk user management, iptables protection, and IP validation, each accompanied by clear code examples.
This guide shows how to patch coreutils so that the Linux cp and mv commands display a visual progress bar, covering version checks, source download, applying the advcpmv patch, compiling, configuring replacements, and testing the new functionality.
This article provides a step‑by‑step tutorial on Linux shell programming for beginners, covering variable naming rules, string manipulation, script creation, environment variable handling, arithmetic operations, user input, logical and string operators, as well as common file and directory commands, all illustrated with concrete code examples and screenshots.
The article explains HTTP’s plaintext nature and its susceptibility to man‑in‑the‑middle attacks, then details how HTTPS (TLS) uses asymmetric key exchange, certificates, and a trusted CA hierarchy to establish encrypted communication and prevent such attacks.
The article presents nine diagrams that illustrate Linux performance tooling categories—including observability, static analysis, benchmarking, tuning, sar, perf-tools, tracing, and BPF tools—providing a quick visual reference for system engineers.
