Common shell commands and ideas—files, permissions, processes, systemd, networking, and scripting—with brief notes.ファイル操作・権限・プロセス・systemd・ネットワーク・シェルなど、よく使うコマンドと概念の短い説明です。
?When on, your score (WPM, words, accuracy) is sent to the leaderboard after each time-attack or goal-words round. Turn off if you prefer not to submit.
My statistics?Open a dedicated page with your practice history, streak, WPM trends, and charts. Data syncs when you are logged in.
?Choose how to play: Free play, Time attack, Goal words, or Flow typing.
During play
?Type capital and small letters exactly as shown (e.g. "Word" not "word").
?Focus the typing field when the page loads and after each word so you can type immediately.
Typing & round
?Shuffle the word list each round, or show words in list order.
?How long to wait before the next word appears. Set to Instant to advance immediately.
Sound
?Sound played on correct and incorrect answers. Choose a theme or turn off.
?Volume of correct/incorrect sounds. Only applies when sound effects are on.
?Play a sound when you type the word correctly.
?Play a sound when you type a wrong letter.
Display
Language & navigation
UI language. More languages may be added later.
?Show favorite categories at the top of the category list and add or remove with a star.
Appearance
?Font for the word and typing area. Monospace overrides this when enabled.
Follow system light/dark or choose Light or Dark.
?Default color for buttons, links, and highlights. Choose Custom to pick any color.
?Color for correctly typed characters.
?Color for incorrect characters.
?Use a fixed-width font for the word and typing area.
?Show a brief flash on the screen when you type a word correctly.
?Terminal-like look: dark background, monospace, minimal cards. Choose a color theme.
Play screen display
?Display an on-screen keyboard and highlight the next key to type.
?Highlights each key by the recommended finger (US QWERTY). Visible when the on-screen keyboard is shown.
?When on, shows a brief "N combo" after consecutive correct answers and plays a sound at 5, 10, and 20 combo.
?In Time Attack or Goal Words mode, show "Perfect!" and a sound when you finish with no mistakes and no skips.
?When on, after a round you see your rank and a link to open the ranking page. Turn off to hide this line.
?Show a progress bar (e.g. 5 / 20) for the current category above the word.
?Show a Share button below the stats so you can share the app or current page.
?Show play result (correct count, WPM, CPM, accuracy) below the typing area after each round.
Accessibility
Size of the word to type.
?Spacing between characters in the typing area. Useful for readability.
?Line spacing in the typing area. Relaxed or loose can help readability.
?When enabled, each new word is read aloud automatically.
?Minimize transitions and animations (e.g. modal open/close, correct-answer flash).
?Stronger text and border contrast for better readability.
?Make keyboard focus outline more visible for accessibility.
?Ignore repeated key events when holding a key down. Helps prevent accidental extra characters.
Data
Manage your practice data and reset stats.
?When enabled, words you submit incorrectly are saved and can be practiced in the Wrong words category.
Reset activity stats?Clear totals, streak, calendar, and today's count. This cannot be undone.
Clear wrong words list?Remove all saved wrong words from the Wrong words category.
Export custom categories?Download your custom categories as a JSON file. Use it as backup or to move to another device.
Import custom categories?Load custom categories from a previously exported JSON file. New categories are added; categories with the same name are overwritten.
Reset all settings to default?Restore appearance, display, sound, and other preferences to their default values. Your stats, wrong words list, and custom categories are not changed.
Settings presets?Save your current settings (appearance, sound, flow mode, etc.) to a slot. Load to apply them again. Stats and wrong words are not included.
Save and load up to 3 setting snapshots. You can add a note to remember what each preset is for.
Preset 1
Preset 2
Preset 3
Clear all site data?Permanently delete everything stored for this site: stats, wrong words, custom categories, favorites, and all settings. This cannot be undone and data cannot be restored. Export custom categories first if you want to keep them.
Site storage?Used: settings and stats (in localStorage). Available: total quota the browser gives this site. localStorage is usually limited to about 5–10 MB per site.
Keyboard shortcuts
Playing
EnterSubmit answer, next word
SpaceFocus the typing input
Ctrl + BackspaceClear input, retry current word (when input focused)
Navigation & settings
EscapeClose this dialog or category list
Ctrl + ,Open settings
Ctrl + KOpen category list
?Show this shortcuts list
Ctrl + Shift + KToggle on-screen keyboard on/off
Ctrl + Shift + IFocus the typing input
Other
Ctrl + Alt + RShuffle and restart current category
Ctrl + Shift + TToggle light/dark theme
Ctrl + Shift + SShare app or current page (Web Share or copy URL)