单项选择题
Which of the following will cancel only job 123 from printer lp01?（）
A. lpstat -d 123 lp01 B. enq -d 123 -p lp01 C. qcan -x 123 -P lp01 D. lpcan -j 123 -p lp01
单项选择题 Which of the following is the correct command to list the filesystems in datavg?（）
单项选择题 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?（）
单项选择题 Which of the following will rename dir1 as dir2?（）
