CompTIA Linux+ (XK0-004) — Question 23

A systems administrator wants to know the current status of a series of dd jobs that were started in the background three hours ago.
Which of the following commands will achieve this task?

Answer options

• A. sudo killall ג€"HUP dd
• B. sudo killall dd
• C. sudo killall ג€"TERM dd
• D. sudo killall -USR1 dd

Correct answer: D

Explanation

The correct answer is D because sending the -USR1 signal to dd jobs will prompt them to output their current status to standard error. The other options either terminate the dd process or send signals that do not provide the status of the jobs.