821. What command is used to copy a file ?
822. Which of the following command lists the last 10 lines of a file ?
823. Which command is used to extract specific columns from the file ?
824. Which command will be used with vi editor to insert text to left of cursor ?
825. Which of the following files contains information related to password aging ?
D. All the three
826. Which command is used with vi editor to search a pattern in the forward direction ?
827. Which option will be used with disk free command to include the total amount of disk space in the file system?
828. Which command is used with vi editor scroll half page backward ?
B. [Control – u]
D. [Control -P]
829. What file contains the list of port numbers (and associated names) monitored by inetd ?