To power down the system, you use:

Larry, working as root, needs to change the ownership of the file 'myfile' from 'james' to 'mary.' He should:

Which Standard does pNFS Stands for..

If you set your /etc/inittab file to have the default init entry to be 'init:3:default:', then your system default runlevel is:

What is the tee command?

'xhost +' is a security problem because:

Who developed Linux?

Which command changes permissions of files or directories?

What output should the ls command show after executing the following command? $ touch {report,graph}_{jan,feb,mar}

What does permission 644 denote?

What is the name of the file where groups are added?