Git
Practice Git porcelain: status, commit, branch, rebase, restore, and worktrees.
64 commands
Practice commands like a library. Improve like a gym.
Discover curated tracks, answer short quizzes with clear feedback, and return for the next due command — without arcade noise.
- Guest practice available now
- Spaced repetition when signed in
- Code-first prompts and answers
Interactive demo
Which Git command stages all changes in the working tree?
Explore tracks
Vim
Practice Vim keyboard shortcuts: motions, operators, text objects, buffers, tabs, folds, vimdiff, and quickfix.
175 commands
Docker
Practice Docker CLI: run, exec, volumes, networks, Compose, and system prune.
70 commands
Bash
Practice Bash syntax: parameter expansion, special variables, set options, redirection, and test conditions.
60 commands
How it works
Pick a track
Choose Git, Linux, Docker, and more — browse like a cheatsheet library.
Answer short prompts
Multiple choice, fill-blank, key sequences, or query editors with clear feedback.
Return for due cards
Signed-in practice uses spaced repetition so weak commands surface again.
Outcomes
What you get from consistent practice
Faster recall
Short sessions keep muscle memory for commands you actually use.
Visible momentum
XP and streaks summarize effort without turning practice into a spectacle.
Due-aware return
When signed in, spaced repetition prioritizes what is due — not random trivia.
Code-first clarity
Prompts and answers stay in monospace so commands stay legible.
Prototype preview
A workspace that knows what is due next
- Next best action from due / new counts
- Queue and weak spots from SR card groups
- XP and streak using existing progress fields
Lab mock
Practice 8 due cards on Git
420 XP
- git rebase -i HEAD~3
- git stash pop
- git cherry-pick
- git reflog
- git bisect
Built like a library. Used like a practice gym.
Search-first
Find a track or sample command before you browse a grid.
Multiple answer modes
MC, fill-blank, key-sequence, and query editor — mode support varies by track.
Semantic feedback
Correct, Incorrect, and XP chips stay tokenized and labeled — never color-only.
Spaced return
Signed-in progress groups Due / New / Learning / Mastered from existing SR data.
Ops-calm workspace
Dense tables and clear next actions for people who practice more than once.
Guest path
Try /play without an account, then sign in to keep spaced progress.
Admin content ops
Command CRUD and import stay role-gated — separate from learner discovery.