Terminal, Working directory, User id – HP NonStop G-Series User Manual

Page 204: System v

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system

A single copy of the HP NonStop operating system and the collection of hardware groups in
which it runs.

system console

An optional file that receives messages sent through specific function or procedure calls.

system manager

See

manager.

.

system process

A part of a single copy of the HP NonStop operating system with Open System Services (OSS)
interfaces. A system process does not have an OSS process ID.

System V

A version of UNIX developed and marketed originally by AT&T.

terminal

A type of character special file that conforms to the interface description in Clause 7 of ISO/IEC
IS 9945-1: 1990.

UID

A nonnegative integer that uniquely identifies a user within a node.

The UID is a scalar number consisting of the group number multiplied by 256 and added to the
member number; for example, the UID of the super ID is (255*256) + 255, or 65535. The UID
is used in the Open System Services (OSS) environment for functions normally associated with a
UNIX user ID.

See also

HP NonStop user ID

.

undefined

Pertaining to the use of an incorrect value for data or the incorrect behavior of a program for
which the ISO/IEC IS 9945-1: 1990 standard imposes no portability requirements.

unmount

To make a fileset inaccessible to the users of a node.

unspecified

Pertaining to the use of a correct value for data or the correct behavior of a program for which
the ISO/IEC IS 9945-1: 1990 standard imposes no portability requirements.

user database

A database within a HP NonStop node that contains the user name, user ID, group ID, initial
working directory, and initial user program for each user of the node.

user ID

The unique identification of a user within a node.

In the Guardian environment, the term “user ID” usually means the group number and member
number pair; for example, the user ID of the super ID is usually described as (255, 255). In the
Open System Services (OSS) environment, the term “user ID” usually refers to the single number
that is the scalar view of the user ID—a number called the UID.
See also

HP NonStop user ID

,

UID

.

user name

A string that uniquely identifies a user within the user database for a node.

UTC

See Coordinated Universal Time (UTC)..

virtual file system

A file system that allows files of a fileset to be distributed across several physical devices.

working directory

A directory, associated with a process, that is used in pathname resolution for pathnames that
do not begin with a slash (/) character.

zombie process

A process that has terminated but is still recorded in system tables.

204 Glossary

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