Operating systems, infrastructure, emulation, and technical history.
How PCSX2's early commercial-game boot proved PlayStation 2 emulation viable, and why that milestone was only the start of decades of hardware research.
How the Ninth Circuit treated intermediate BIOS copying in Sony v. Connectix, what the ruling protected, and which questions it did not settle.
Bash rewrites typed commands through an ordered sequence of expansions before running them. The exact order explains most quoting and globbing surprises.
A command mid-pipeline dies with 'Broken pipe,' often only when piped into head — a specific, well-defined signal, not a random failure.
A prompt showing broken characters or startup errors after a theme update — how to isolate whether it's a font, config, or version issue.
A tool you just installed is definitely on disk, but the shell insists it doesn't exist — almost always a PATH problem, with only a few actual explanations.
TUI apps render clipped over SSH, or the terminal doesn't rewrap after resizing — the remote shell has a stale idea of the terminal's actual dimensions.
A shortcut that works outside tmux does something different, or nothing, inside a session — how the prefix key and keybinding layers interact.
Re-running the last command with sudo and fuzzy-searching everything typed today both rely on the same persisted, indexed log the shell writes to disk.
The actual difference between an alias and a function, when each is the right tool, and how to avoid the mistakes that make aliases behave unpredictably.