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?
A) sudo killall -HUP dd
B) sudo killall dd
C) sudo killall -TERM dd
D) sudo killall -USR1 dd

Question

Quizplus · Accepted Answer

Sending the USR1 signal to dd processes will cause them to print their I/O statistics to the standard error output without terminating the process, allowing the administrator to see the current status.

A Systems Administrator Wants to Know the Current Status of a Series