Operating systems, infrastructure, emulation, and technical history.
A source-level look at ScummVM engine detection tables, fingerprints, fallback detectors, target IDs, and the right way to report an unknown legitimate release.
How Bash coprocesses expose input, output, and PID handles, and how to manage descriptor lifetime, backpressure, framing, failures, and shutdown.
How declare -n and local -n create references, work with arrays, follow dynamic scope, interact with unset, and avoid unsafe variable-name injection.
How the shell exec builtin replaces its process, preserves PID and selected descriptors, changes signal and trap behavior, and simplifies service wrappers.
How David Mills evolved Internet time synchronization from early experiments into NTP, with offset estimation, clock discipline, strata, and redundancy.
How Ken Thompson and Rob Pike shaped UTF-8 in 1992, why self-synchronizing bytes mattered, and how later standards narrowed it to today's secure form.
How X grew from Project Athena and W, separated display servers from clients and window managers, and reached the durable X11 protocol in 1987.
How a ProjFS provider projects a backing store into NTFS, enumerates placeholders, supplies data, and survives races, cancellation, and local changes.
How installers use Restart Manager to find file users, coordinate shutdown and restart, and distinguish a reduced reboot rate from guaranteed replacement.
How Windows records NTFS changes by USN, how consumers checkpoint journal identity and position, and why gaps require a full recovery design.