A technician recently installed Linux on a desktop computer. The desktop has two graphics cards from two different vendors. One of the graphics cards works, but the other does not. Which of the following commands should the technician use to start troubleshooting this issue?

A Linux administrator wants to obtain a list of files and subdirectories in the /etc directory that contain the word "services". Once the files and subdirectories are discovered, they should be listed alphabetically in the /var/tmp/foundservices file. Which of the following shell scripts will accomplish this task?

A security administrator wants to display a warning banner before a user logs in. Which of the following files must be edited to make this happen?

Which of the following commands allow an administrator to determine if the current system is a virtual machine?

A systems administrator needs to append output of ls -lha /opt command to the contents of a test.txt file. Which of the following commands will accomplish this?