Linux 50‑Minute Class — Bundle

This bundle contains: - linux_50min_lesson.md — the full teaching pack - alloc.c — userspace memory demo - mlock_demo.c — lock memory to avoid swap - hello.c & Makefile — minimal kernel module

Quick Start

Userspace demos

gcc -O2 alloc.c -o alloc && ./alloc 300 &
pid=$!
pmap -x $pid | tail
grep -E 'VmRSS|VmSize|VmLck' /proc/$pid/status

gcc -O2 mlock_demo.c -o mlock_demo && sudo ./mlock_demo

Kernel module (use a VM)

sudo apt update && sudo apt install -y build-essential linux-headers-$(uname -r)
make
sudo insmod hello.ko who="class"
dmesg | tail -n 10
lsmod | grep hello
sudo rmmod hello
make clean