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A flashcard app for Linux that turns your PDFs into cards

Upload lecture slides, notes or photos of a terminal session, and get flashcards with spaced repetition that you can study right in your Linux browser.

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Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

Free · First set needs no signup · Creates flashcards in seconds

Why a Linux flashcard app helps with commands

Linux study material is full of commands, file paths and configuration details that are easy to forget, so a Linux flashcard app that builds cards from your own notes saves time. DeckOwl takes PDFs, slides, plain notes or photos of pages and turns them into flashcards that repeat on a spaced schedule.

Turn course slides and man page excerpts into cards
Practice commands by writing the task on the front and the command on the back
Review missed cards more often than the ones you already know
Export to Anki or CSV on a paid plan when you want to study elsewhere

Example Linux command flashcards

What does ls -la show that plain ls does not?Hidden files (names starting with a dot) and long-format details such as permissions, owner, size and modification time.

Which command prints the current working directory?pwd, which stands for print working directory.

Which file stores user account information on most Linux systems?/etc/passwd, which lists usernames, user IDs, home directories and login shells.

What permissions does chmod 755 give a file?Read, write and execute for the owner; read and execute for the group and others.

What does sudo do before running a command?It authenticates the user and runs that one command with superuser (root) privileges.

Generate the full set

Works in your Linux browser

DeckOwl runs in the browser you already use on Linux, so there is no separate program to install or maintain.

Reads the files you already have

Upload PDF, DOCX, PPTX, plain text or images. Photos of pages are read with text recognition.

Spaced repetition built in

Cards come back on a schedule based on how well you remember them, so you spend time on the commands you keep missing.

How it works

Upload your material

Add a PDF, slide deck, set of notes or a photo of a page from your Linux course or book.

Generate flashcards

DeckOwl turns the content into question and answer cards. Check them and edit anything that needs fixing.

Study on a schedule

Review cards in the browser. Missed cards return sooner, and the ones you know come back less often.

Because the study tool runs in your browser, you can use it on any Linux desktop without installing a separate program. The free plan includes three generations per month and studying in the browser. Plus adds export to Anki, CSV, PDF and DOCX for studying in other apps.

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Turn PDFs, slides, notes and photos into spaced repetition flashcards. Free to start.

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Frequently asked questions

What makes a good flashcard for learning Linux commands?

A good card gives a task on the front, such as finding the size of a directory, and the exact command on the back. Keep one command or concept per card so you can tell which one you forgot.

How many flashcards should I make for a Linux certification exam?

Aim for one card per command, option or concept, and split large topics such as file permissions or networking into smaller decks. Review the cards you miss more often than the ones you already know.

Does DeckOwl work on Linux?

Yes. DeckOwl runs in your browser, so it works on Linux, and the free plan lets you study in the browser with no install.

Can I export my Linux flashcards to Anki?

Yes, but exports are a paid feature. Plus is $39/year or $7.99/month and includes export to Anki, CSV, PDF and DOCX, while the free plan does not include exports.

Generate free flashcards

Keep exploring the topic

Review the main ideas visually or practice recalling them.