Reproducible
engineering
experiments

Query USB web camera supported resolutions and pixel formats in Linux: use v4l2-ctl --list-formats-ext and ffmpeg to inspect /dev/video0 capabilities.

Add custom borders and rounded corners to Android TextViews: create shape XML drawables with <stroke>, <solid>, and <corners> tags.

Identify defunct zombie processes in Linux using ps aux and top, understand waitpid() parent failures, and send SIGCHLD or restart parent processes.

Fix Android AAPT unbound prefix XML compilation errors: add missing xmlns:android or xmlns:app namespace declarations to root layout elements.

Master ADB shell commands on Android: open interactive shell, execute pm list packages, inspect dumpsys services, capture logcat logs, and run shell scripts.

Configure splash screens in Android 12+: master SplashScreen API, icon dimensions (240x240 dp), windowSplashScreenAnimatedIcon, and theme XML.

Extract 7z archive files in Linux: install p7zip-full, run 7z x archive.7z for full path decompression, list contents with 7z l, and extract specific files.

Run interactive Ubuntu Linux containers in Docker: use docker run -it ubuntu:latest bash, mount local volume directories, and manage root container shells.

Netdata is a lightweight, open-source system performance monitoring agent for Linux. It collects thousands of metrics per second—including CPU usage, RAM allocation, disk I/O, network throughput, and container stats—and renders them in a real-time web dashboard without high CPU overhead.