Multiple choice unix

Which of the following command addresses all users who are currently hooked on?

  1. write

  2. mail

  3. wall

  4. mesg

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The wall command broadcasts a message to all terminals of all logged-in users, making it the correct choice for addressing everyone currently logged into the system. The phrase 'hooked on' appears to be a typo for 'logged in'.