- Hewlett-Packard Personal Computer User Manual

Glossary
219
uses removable CD-ROM disks.
The drive contains a
semiconductor laser for reading
data optically and an embedded
controller.
Central Processing Unit (CPU)
The part of a workstation that
interprets and executes
instructions; the “brain.”
child directory See
subdirectory.
click To press and immediately
release a mouse button. The term
comes from the fact that pressing
and releasing most mouse buttons
makes a clicking sound. Compare
drag and drop.
cluster A group of workstations
connected via a Local Area
Network (LAN). One workstation,
the cluster server, acts as a
file-system server for the cluster
clients. See also cluster client,
cluster node, cluster server.
cluster client. Aclusternodethat
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, acts as a file server to the
other machines in the cluster.
See also cluster, cluster client,
cluster server.
cluster server Aworkstationthat
provides file access, login access,
file transfer, 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.
cold install. A process that
requires the booting of an install
kernel from an install server over a
network or from a CD-ROM and
answering some configuration
questions.
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 (often a file or directory) to
be operated on by the command.