Legenda: - tty = any kind of terminal, or serial port, represented in the device hierarchy as /dev/tty - PID = process ID - UID = user ID number -> by which the system knows the account. This is how Unix represents the user (instead of using the username) - GID = group ID -> the primary, or default, group to which the account belongs - daemon = a program that works in the background and performs repetitive services - protocol = a standard method for transferring information between two different systems - inode = Every file in Unix has a number, called an inode,associated with it. Unix refers a file using the inode which is unique to a partition - block = 512 bytes of data