单项选择题
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.
单项选择题 Which of the following will rename dir1 as dir2?（）
单项选择题 An operator needs to change from the /usr/bin to the /var/spool directory. Which of the following commands will accomplish this?（）
单项选择题 The printer associated with the hp5_queue is down for maintenance. Which of the following commands will move the remaining print jobs from hp5_queue to the hp7_queue?（）