What does permission 644 denote?

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

Which command changes permissions of files or directories?

Who developed Linux?

Which of the following is an incorrect command?

What is the correct format to open the file /etc/test into the vi editor?

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

Which Standard does pNFS Stands for..

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

To power down the system, you use:

How would you find out the dependencies of RPM package?