单选题An operator has been asked if a system was rebooted. Which of the following commands should be used to determine if a reboot has occurred?（）AThe name?command.The ?name?command.BThe ptime?command.The ?ptime?command.CThe hutdown ast?command.The ?hutdown ?ast?command.DThe ?etc/rc.shutdown?command.
单选题
An operator has been asked if a system was rebooted. Which of the following commands should be used to determine if a reboot has occurred?（）
A
The name?command.The ?name?command.
B
The ptime?command.The ?ptime?command.
C
The hutdown ast?command.The ?hutdown ?ast?command.
D
The ?etc/rc.shutdown?command.
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