Drive, Discipline and Determination : The 3 D’s That Transform Your Life
Rahul had a dream of becoming a successful entrepreneur, but his journey was anything but easy. He … Read more
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Consistency, Clarity, and Courage in System Architecture
Design robust software architectures: maintain Consistency in code standards, demand Clarity in design specs, and show Courage when refactoring legacy code.
Balance, Bravery, and Belief for Software Architects
Essential mindset for system architects: strike Balance between speed and debt, exercise Bravery when making risky choices, and maintain team Belief.
The 3 A’s for Happy Life: Attitude, Action and Adaptability with Practical Tips
A happy and successful life isn’t just about luck or talent—it’s about how you think, act, and … Read more
String Initialization in C: Syntax, Memory, and Examples
Master string initialization in C: compare char arrays vs char* string literals, null terminators (\0), stack memory allocation, and read-only segments.
How to Calculate String Length in C (strlen vs Custom Loop)
Calculate string lengths in C: compare POSIX strlen() with custom while loop implementations, null terminator checks, and size_t return types.
Understanding the 4 GCC Compilation Stages in Linux
Master the 4 stages of GCC compilation in Linux: Preprocessing (-E), Compilation (-S), Assembly (-c), and Linking (-o) with ELF object inspection.
Array Initialization in C: Syntax, Memory, and Designated Initializers
Master array initialization in C: learn zero initialization, designated initializers [index] = val, multi-dimensional array memory strides, and memset.
How to Decode QR Codes from Terminal in Ubuntu Linux
Decode QR codes and barcodes from the terminal in Ubuntu Linux: use zbarimg CLI, process image files, and extract decoded text payload streams.
How to Read String Input Safely in C (fgets vs scanf)
Read string inputs safely in C: replace dangerous gets() and scanf() with fgets(buf, sizeof(buf), stdin), strip trailing newlines, and prevent buffer overflows.
Upgrade Ubuntu Server or Desktop from the Command Line
Upgrading your Ubuntu installation upgrades system packages, kernel versions, and security patches to the next release. The canonical tool for performing version upgrades from the terminal is do-release-upgrade , which safely updates package repositories, handles dependencies, and cleans up obsolet
Pointers and Strings in C: Memory Layout and Manipulation
Master pointers and strings in C: compare mutable char[] arrays vs immutable char* pointers, pointer arithmetic, string copying, and memory segment layout.
How to Configure Fullscreen Android Activity
Configure immersive fullscreen Android activities: hide status bar and navigation bar using WindowInsetsControllerCompat in Kotlin and AndroidThemes XML.
How to Discover UPnP / DLNA Devices on Network in Linux
Discover UPnP and DLNA media devices on local Linux networks: query SSDP multicast packets using gssdp-discover and nmap UPnP discovery scripts.
Comprehensive Guide to Video Resolutions: 8K, 4K, 2K, FHD, UHD, and More
Choosing the right video resolution is crucial for ensuring optimal video quality for different devices and purposes. … Read more
How to Check USB Web Camera Resolutions in Linux Terminal
Query USB web camera supported resolutions and pixel formats in Linux: use v4l2-ctl --list-formats-ext and ffmpeg to inspect /dev/video0 capabilities.
How to Add Border Styles to Android TextView
Add custom borders and rounded corners to Android TextViews: create shape XML drawables with <stroke>, <solid>, and <corners> tags.
How to Identify and Clear Zombie Processes in Linux
Identify defunct zombie processes in Linux using ps aux and top, understand waitpid() parent failures, and send SIGCHLD or restart parent processes.
How to Fix Android AAPT Error: Unbound Prefix
Fix Android AAPT unbound prefix XML compilation errors: add missing xmlns:android or xmlns:app namespace declarations to root layout elements.
A Beginner’s Guide to Linux Initscript: Starting and Stopping Processes During Boot
Linux initscripts are an essential part of the booting process, allowing administrators to automate services that start … Read more
How to Use ADB Shell Commands on Android
Master ADB shell commands on Android: open interactive shell, execute pm list packages, inspect dumpsys services, capture logcat logs, and run shell scripts.
How to Troubleshoot adb devices Not Detected Errors
Fix adb devices showing unauthorized, offline, or empty lists: restart adb server, accept USB debugging RSA prompts, update udev rules, and fix drivers.
ADB to Identify WiFi MAC, Product Model and Serial Number Quickly!
Have you ever wondered how to retrieve crucial device information, such as the WiFi MAC address, product … Read more
How to Fix dtc: Command Not Found Error in Linux
Fix dtc: command not found error in Linux: install device-tree-compiler on Ubuntu/Debian, compile Device Tree Source (.dts) to binary blob (.dtb).