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
ls >-1
Question 25
A user accidentally created the subdirectory \dir in his home directory. Which of the following commands will remove that directory?
