Question 21

Which of the following apt-get commands will install the newest versions of all currently installed packages?
  • Question 22

    Which command displays a list of all background tasks running in the current shell? (Specify ONLY the command without any path or parameters.)

    Question 23

    Which of the following files, located in a user's home directory, contains the Bash history?
  • Question 24

    Which of the following commands redirects the output of lsto standard error?
    ls >-1
  • Question 25

    A user accidentally created the subdirectory \dir in his home directory. Which of the following commands will remove that directory?