id: checkpoint-03
title: Checkpoint 3
image: base
instruction: |
  This quest tests your understanding of:
  1. `cp`: copy files and folders
  2. `mv`: move or rename files and folders
  3. `rm`: delete files and folders
  4. `rmdir`: delete empty folders
  5. Use options to change a command's behavior, such as `rm -r`
  6. Topics covered in the previous checkpoints

requirements:
  - remove

stages:
  - id: start
    name: Click `Start` to begin
    condition:
      command: echo start
    response:
      content: |
        This quest checks what you have learned in the previous lessons.
        You will need to choose the commands yourself.
        Think about which commands can help you complete each task.

        To continue, make the terminal print `next`.

  - id: next
    name: Make the terminal print `next`
    requirements:
      - start
    condition:
      output: next
    response:
      content: |
        Now list the contents of your current folder.

  - id: ls-home
    name: List the contents of the current folder
    requirements:
      - next
    condition:
      pwd: /home/commander
      command: ls
    response:
      content: |
        Copy the file inside `folder` to a new file named `world.txt` in the same folder.

  - id: cp-hello-world
    name: Copy the file inside `folder` as `world.txt`
    requirements:
      - ls-home
    condition:
      files:
        - path: /home/commander/folder/hello.txt
          type: file
          exists: true
        - path: /home/commander/folder/world.txt
          type: file
          exists: true
    response:
      content: |
        Delete the `hello.txt` file inside `folder`.

  - id: rm-hello
    name: Delete `hello.txt` inside `folder`
    requirements:
      - cp-hello-world
    condition:
      files:
        - path: /home/commander/folder/hello.txt
          type: file
          exists: false
    response:
      content: |
        Now move `world.txt` out of `folder`.
        (Move it into your home folder, `/home/commander`.)

  - id: mv-world-out
    name: Move `world.txt` out of `folder`
    requirements:
      - rm-hello
    condition:
      files:
        - path: /home/commander/folder/world.txt
          type: file
          exists: false
        - path: /home/commander/world.txt
          type: file
          exists: true
    response:
      content: |
        Rename `world.txt` back to `hello.txt`
        and display its contents.

  - id: cat-hello
    name: Rename `world.txt` to `hello.txt` and display its contents
    requirements:
      - mv-world-out
    condition:
      command: cat hello.txt
      files:
        - path: /home/commander/world.txt
          type: file
          exists: false
        - path: /home/commander/hello.txt
          type: file
          exists: true
      output: This is `hello.txt`.
    response:
      content: |
        Delete the `folder` folder.

  - id: rmdir-folder
    name: Delete `folder`
    requirements:
      - cat-hello
    condition:
      files:
        - path: /home/commander/folder
          type: directory
          exists: false
    response:
      content: |
        Delete the `trash_can` folder.

  - id: finish
    name: Delete `trash_can`
    requirements:
      - rmdir-folder
    condition:
      files:
        - path: /home/commander/trash_can
          type: directory
          exists: false
    response:
      content: |
        Congratulations! You passed this checkpoint!
        You are ready to move on to the next lessons.