Quick References interview prep

Bash & Shell — Bash and the Unix tools with step-through labs (expansion, redirections, pipelines, set -e, subshells, awk), p
Git — Git from the object store up: what add and commit write, how merges decide, how to undo and recover, release a
Python — Python for interviews and production: cost tables, animated CPython internals (list growth, hashing, aliasing,
SQL — Runnable SQL on PostgreSQL 17: step-through animations of clause order, NULLs, joins, windows and isolation, r