Reproducible
engineering
experiments

Master essential open-source Linux performance and debugging tools: strace, ltrace, perf, Valgrind, iostat, ss, and iperf3 with command workflows.

Set up a TFTP server on Ubuntu using tftpd-hpa: learn configuration, permission fixes, ufw firewall setup, and U-Boot embedded kernel image transfers.

Sniff USB traffic on Linux using Wireshark and the usbmon kernel module: step-by-step setup, non-root udev permissions, and USB URB display filters.

Kernel modules are usually built out-of-tree, but for modules tightly coupled with kernel internals it's better to build them in-tree, as part of the kernel compilation itself, for header and config compatibility and automatic compilation during make . The example below uses linux-5.10/ as the so

Keep shell scripts running after SSH disconnects using GNU Screen: master screen -S, detach (Ctrl+A d), reattach (-r), logging (-L), and nohup vs screen.

Learn how to debug multi-file C applications using GDB: master gcc -g debug symbols, breakpoints by filename (break file.c:line), and stack frames.

Set up Material 3 (Material Design) themes in Android: configure styles.xml, Theme.Material3.DayNight, color attributes, and dynamic colors.

Build interactive AlertDialog popups in Android with MaterialAlertDialogBuilder: single-choice radio lists, multi-choice checkboxes, and event listeners.

Use grep , sed , and find to search and replace strings across a codebase instead of doing it manually. Step 1: Find a String with grep -r — recursive -n — shows line numbers -w — matches whole word -e — the pattern Step 2: Replace a String in One File with sed -i — edits in place s — subs