单项选择题
A. chmod -R o-s /application
B. chmod -R ug-s /application
C. chmod -R -s -o /application
D. chmod -R -s -ug /application
单项选择题 Which of the following commands can an operator use to view disk performance details?（）
单项选择题 An operator is editing a file using vi. Which of the following subcommand sequences will copy the current line plus the next 2 lines to the end of the file?（）
单项选择题 How can an operator temporarily gain access to the command line while in a smit session, without losing the current smit session?（）