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
A better answer from my linux book, ” For users of the dd command, sending signal SIGUSR1 reports the dd I/O status. Simply run killall -10 dd while dd is running in the background and the user will be informed of DD’s data transfer progress.”