Linux & Tools
Phase 2 of the driver-development path — 4/65 bytes, Topic 2.1 (Linux Command Line) underway
Linux Command Line
Filesystem layout, daily navigation, find & grep, permissions, links, and archives — the shell reflexes Phase 1 never needed but every session from here on assumes.
Git
Not started yet — the edit/stage/commit workflow through branching and remotes, plus the two kernel-adjacent Git skills driver work actually leans on. 7 bytes across 2 chapters.
Compilation and Build Deep
Not started yet — GCC's four stages and flags in depth, real multi-file Makefiles including the kernel-module Makefile shape, and cross-compilation. 11 bytes across 3 chapters.
Userspace Debugging Tools
Not started yet — gdb, strace, ltrace, and valgrind: the tool vocabulary every debugging interview answer draws on. 8 bytes across 2 chapters.
Linux System Programming Essentials
Not started yet — the syscall layer where C becomes systems programming: file and process syscalls, signals, IPC, and POSIX threads. The largest topic in Phase 2 at 24 bytes across 5 chapters.