单项选择题
A.The /tmp/application should be globally writable.
B.The /tmp/application directory should be executable.
C.The /tmp/application directory should be owned by the user.
D.The /tmp/application directory should have the sticky bit set.
单项选择题 Given the following script， why does the output come out as an empty line instead of "dog"？（）
单项选择题 Review the following program. What is the possible problem？（）
单项选择题 Asystemadministratorhasaserverthatisperformingpoorly.ThevmstatcommandidentifiesthathighCPUusageistheproblem.Whichofthefollowingcommandscanbeusedtoidentifytheeightmostactiveprocessesrunningontheserver？（）