- id: 16508837,
  subject: Linux,
  subsubject: bash,
  type: explain,
  difficulty: easy,
  prompt: |
      Explain what the following bash command does:
      ```
      mkdir -p foo/goo
      ```
  answer: |
      If the foo directory does not exist, it will create it as well as a subdirectory called goo.
      If the foo directory exists but the goo subdirectory does not exist, it will create the goo subdirectory.
      If both already exist, it will do nothing.
- id: 17041667
  subject: Linux
  subsubject: bash
  type: explain
  difficulty: easy
  prompt: |
      Explain what the following bash command does:
      ```
      n=`cat foo | wc -l`
      ```
  answer:
      It counts the number of lines in the file foo and assigns the value to a variable named n.

}