Topic index / 03 notes
kernel
Visual explanations connected by this systems boundary.
01
What happens when you press Enter?
Follow ls -la from a terminal keystroke through shell parsing, command lookup, process replacement, filesystem calls, and pixels on screen.
03
What a pipe actually does
Replace the punctuation model of `|` with connected processes, file descriptors, bounded kernel buffers, and backpressure.
05
Linux memory beyond used versus free
Read RAM as anonymous memory, reclaimable cache, kernel state, swap, and pressure—then separate host capacity from cgroup limits.