Terms vs Manual Override

You've seen the terminal. Your AI assistant practically lives in it. Time to actually read what it's typing. Terms teaches you real terminal commands the way a vocabulary app teaches words — one card at a time, a few a day, until they stick. THE WIDGET IS THE APP Add the home-screen widget and a new command appears next to your apps every day. Read it when you unlock your phone. No app open required. A FEED YOU CAN BINGE Full-screen flashcards drawn as terminal windows: the command, what it does, every flag explained piece by piece, and why you've seen it before — "agents use grep to locate where code lives." HONEST LEVELS A 60-second placement test deals you in at the right tier: on-ramp, daily driver, combos & power, or deep cuts. No fake progress, no flattery — the deck starts exactly where your knowledge ends. PRACTICE THAT STICKS Quick quizzes built from the cards you're learning, with spaced repetition scheduling the reviews. Tap "just got it!" or "alr knew it" — that's the whole ceremony. CALM BY DESIGN • One notification a day. Opt-in, at your time, hard cap two. • Free, offline, no account, no ads. • Dangerous commands carry the warning they deserve (looking at you, rm -rf). WHAT'S INSIDE 231 real commands and concepts at launch — ls, cd, grep, cat, lsof -i :3000, chmod, pipes, redirects, xargs, sed, awk, tar — tiered from total beginner to power user, searchable in the library, every one tracked to mastery. Built for everyone shell-adjacent: vibe coders shipping with AI, students, new developers, and anyone who has ever copy-pasted a command and prayed. The terminal is the first course. More languages of code are coming.

A hands-on introduction to the command line and SQL. You type the commands. No videos, no syntax tables to memorise. Each lesson hands you real material and a question you have to answer yourself, and you answer it by typing real commands. Get one wrong and you get a real error message, worded the way a real terminal words it. WHAT YOU LEARN · Filesystem: pwd, ls (with -a / -R), cd, cat, find · Text: head, tail (with -n +N / -n -N), wc, sort, uniq · Search: grep, with -i / -R / -F / -n and regular expressions · Compare and verify: diff (normal and -u unified format), sha256sum · SQL: SELECT, WHERE, ORDER BY, LIKE, JOIN, GROUP BY / COUNT / HAVING · One habit running through all of it: any conclusion should be something a stranger can re-run command by command HOW THE COURSE IS BUILT Eleven lessons, each with one answer you have to find for yourself. The material is a virtual filesystem and a real SQLite database. Commands run in a sandbox and never touch your device; the database is read-only, so no query you write can break anything. Most puzzles accept more than one solution: the way you already know works too. ALSO INCLUDED · Offline syntax manual and table-schema reference, always one tap away · Practice mode (with the full course): the terminal and database with no lesson flow, just type · Command and flag completion, Tab completion, history recall — built for touch · Three colour schemes, text size, reduced motion, haptics toggle · Runs entirely offline. No network, no data collected, no account, no ads ABOUT THE STORY A fictional storyline ties the eleven lessons together: you are reviewing an obsolete course package scheduled for deletion, and you use each command you have just learned to check the material against itself. The story is the premise for the exercises, not a substitute for them — every conclusion is still one you type out yourself. The prologue and the first three lessons — the whole command-line half — are free. Lessons 4 to the finale (the SQL half) and practice mode are one purchase: no subscription, no ads, no account.