AIX Advanced Interactive Executive. IBM's UNIX. control+c <^c> A character sequence for aborting from many applications in UNIX. Similar to control+break in control+d <^d> A character sequence for politely exiting from many applications in UNIX. CPU Central Processing Unit is the calculating heart of the computer. desktop machine Small but robust single-user and single tasking computers. DOS An Operating System used by desktop computers. e-mail Applications for sending electronic postcards across networks. Ethernet A network standard for the hardware and data link levels. There are two types of Ethernet: Digitial/Intel/Xerox (DIX) and IEEE 802.3. FINGER A UNIX command for locating users on a system. FTP File Transfer Protocol The Internet standard high-level protocol for transferring files from one computer to another. GOPHER An internet organizer developed at the University of Minn. Gigabyte One billion characters or bytes. IBM RISC 6000 IBM's UNIX workstations image processing Applications related to the manipulation of digital pictures. Internet The global collection of interconnected local, mid-level and wide-area networks which use IP the network layer protocol. login Procedures for signing onto a computer. logout Procedures for signing off of a computer. mainframe a large computer. MAN On-line UNIX documentation MESG A UNIX command for controlling interruptions by TALK and WRITE commands. SERVER Software that allows a computer to offer a service to another computer. Other computers contact the server program by means of matching client software. TALK A UNIX command for two party conversations across the networks. TELNET The Internet standard protocol for remote terminal connection service. TELNET allows a user at one site to interact with a remote timesharing system at another site as if the userŐs terminal was connected directly to the remote computer. SYSTEM The manager of a computer system. ADMINISTRATOR UNIX An operating system developed by Bell Laboratories that supports multiuser and multitasking operations. WHOIS An Internet program which allows users to query a database of people and other Internet entitites, such as domains, networks, and hosts, kept at the NIC. The information for people shows a person's company name, address, phone number and email address. Workstation a multiuser and multitasking computer. WRITE UNIX command for sending a short message to another terminal.