To allow a regular user account to mount and unmount a filesystem (for instance, a cdrom or floppy), which of the following options will need to be added to the
corresponding line in /etc/fstab?
An administrator has created a really long letter and after the administrator is done, notices that the name "Bob" has been used many times. The administrator
forgot to capitalize it in many instances. Which of the following commands would replace "bob" with "Bob" in all instances and generate a new letter for printing?