Compaq C360, C240, C180, C200, C160 manual Glossary

Glossary

and flat spots arranged in a continuous spiral track, which is read at a constant speed.

CD-ROM drive A random-access, read-only, mass-storage device that uses removable CD-ROM discs. The drive contains a semiconductor laser for read- ing data optically and an embedded con- troller with a SCSI interface.

Central Processing Unit (CPU) The part of a workstation that interprets and executes instructions.

child directory See subdirectory.

click To press and release a mouse but- ton. The term comes from the fact that pressing and releasing most mouse but- tons makes a clicking sound.

cluster A group of workstations con- nected via a Local Area Network (LAN). One workstation, the cluster server, per- forms as a file-system server for the clus- ter clients. See also cluster client, cluster node, cluster server.

cluster client A cluster node that does not have a local HP-UX file system. Its file system resides on the cluster server. See also cluster, cluster node, cluster server.

cluster node A member of a group of workstations connected via a Local Area Network (LAN). One workstation, the cluster server, performs as a server to the cluster. See also cluster, cluster client, cluster server.

cluster server A workstation that pro- vides file access, login access, file trans- fer, printing, and other services across a network to a defined cluster of systems (cluster nodes) connected via a LAN. See also cluster, cluster client, cluster node, host.

command An instruction that you enter into the system at a prompt, to execute a program or perform a task. See also shell command.

command argument Information you provide on a command line to describe the object (usually a file or directory) to be operated on by the command.

command interpreter A program that reads lines of text from standard input (typed at the keyboard or read from a file) and interprets them as requests to execute other programs. An HP-UX command interpreter is called a shell. See also shell.

command option Information you pro- vide on a command line to indicate any special action you want the command to take. See also default.

configuration The arrangement of a workstation or network as defined by the nature, number, and chief characteristics of its functional units. More specifically, the term configuration may refer to a hardware configuration or a software configuration.

control key sequence A keystroke combination used as a shorthand way of specifying commands. To enter a control key sequence, you hold down the control

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