What command changes the priority of the process running with process id of 12345 to the highest priority?
You want to save vi changes to the file myfile with :w!, but vi complains it can not write to the file. To do this without leaving vi, you type:
Which of the following GNU commands would be the most likely command you’d use to find the system load average?
Which of the following options would be the most appropriate command line to move all of files and directories from directory /A to directory /B?
In the vi editor, which of the following commands will delete the current line at the cursor and the 16 lines following it (17 lines total)?