单项选择题
Which of the following can an operator use to shutdown a system into single-user mode?（）
A.shutdown -d B.shutdown -s C.shutdown -m D.shutdown -Fr -s 1
单项选择题 Where is the run date for an ‘at’job located?（）
单项选择题 Which command starts Workload Manager?（）
单项选择题 Which command will list all subsystem resources on a server?（）
