HP-UX Reference (11i v2 03/08) - 5 Miscellaneous Topics, 7 Device (Special) Files, 9 General Information, Index (vol 9)

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glossary(9) glossary(9)
your group in the file’s mode, you can access the file. When the identity of a group is
associated with a process, a group ID value is referred to as a real group ID,an
effective group ID,asupplementary group ID,orasaved group ID. See also
privileged group and set-group-ID bit.
group access list
A set of supplementary group IDs used in determining resource accessibility. Access
checks are performed as described in file access permissions.
hierarchical directory
A directory (or file system) structure in which each directory can contain other directories
as well as files.
home directory
The directory name given by the value of the environment variable
HOME. When you first
log in, login(1) automatically sets
HOME to your login directory. You can change its
value at any time. This is usually done in the
.profile file contained in your login
directory. Setting
HOME does not affect your login directory; it simply gives you a
convenient way of referring to what is probably your most commonly used directory.
host name An ASCII string of at most 8 characters (of which only 6 are supported by all the various
manufacturers’ UNIX-like operating systems) which uniquely identifies an HP-UX sys-
tem on a uucp(1) network. The host name for your system can be viewed and/or set
with the hostname(1) command. Systems without a defined host name are described as
‘‘unknown’’ on the uucp(1) network. Do not confuse a host name with a node name,
which is a string that uniquely identifies an HP-UX system on a Local Area Network
(LAN). Although your host and node names may be identical, they are set and used by
totally different software. See node name.
image The current state of your computer (or your portion of the computer, on a multiuser sys-
tem) during the execution of a command. Often thought of as a ‘‘snapshot’’ of the state of
the machine at any particular moment during execution.
init A system process that performs initialization, is the ancestor of every other process in
the system, and is used to start login processes. init usually has a process ID of 1
.
See init(1M).
interleave factor
A number that determines the order in which sectors on a mass storage medium are
accessed. It can be optimized to make data acquisition more efficient.
inode An inode is a structure that describes a file and is identified in the system by a file
serial number. Every file or directory has associated with it an inode. Permissions
that specify who can access the file and how are kept in a 9-bit field that is part of the
inode. The inode also contains the file size, the user and group ID of the file, the
number of links, and pointers to the disk blocks where the file’s contents can be found.
Each connection between an inode and its entry in one or more directories is called a
link.
inode number
See file serial number.
Internal Terminal Emulator (ITE)
The ‘‘device driver’’ code contained in the HP-UX kernel that is associated with the
computer’s built-in keyboard and display or with a particular keyboard and display con-
nected to the computer, depending on the Series and Model of system processor. See sys-
tem console and the System Administrator manuals supplied with your system for
details.
internationalization
The concept of providing software with the ability to support the native language, local
customs, and coded character set of the user.
interrupt signal
The signal sent by
SIGINT (see signal(2)). This signal generally terminates whatever
program you are running. The key which sends this signal can be redefined with ioctl(2)
or stty(1) (see termio (7)). It is often the ASCII DEL (rubout) character (the DEL key) or
the BREAK key. Ctrl-C is often used instead.
Section 9−−10 Hewlett-Packard Company − 9 − HP-UX 11i Version 2: August 2003