单项选择题
A. One or more processes are running in the background, preventing log off.
B. One or more processes are paused, requiring operator input prior to logging off.
C. At least one process is running in the background and it will keep running after the operator logs off
D. At least one process is running in the background using nohup and it will terminate when the operator logs off
单项选择题 An application owner wants to grant write permission to all users for all the files and directories in the application directory. Which of the following is the correct command?（）
单项选择题 The operator needs to change the /test filesystem in the testvg volume group so that it mounts automatically following a system reboot. Which of the following commands is correct?（）
单项选择题 The operator needs to execute a long-running shell script. How can the script be executed so the operator does not have to wait until it is complete to access the command prompt?（）