HP-UX Reference (11i v1 00/12) - 5 Miscellaneous Topics, 7 Device (Special) Files, 9 General Information, Index (vol 9)

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STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man9/!!!intro.9
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h
glossary(9) glossary(9)
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 direc-
tory. 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 system
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 acquisitionmore 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 pro-
gram 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.
intrinsic See system call.
I/O redirection
A mechanism provided by the HP-UX shell for changing the source of data for standard
input and/or the destination of data for standard output and standard error. See sh(1).
ITE See Internal Terminal Emulator.
job control Job control allows users to selectively stop (suspend) execution of processes and continue
(resume) their execution at a later time.
The user employs this facility via the interactive interface jointly supplied by the system
terminal driver and certain shells (see sh(1)). The terminal driver recognizes a user-
defined ‘‘suspend character’’, which causes the current foreground process group to stop and
the user’s job control shell to resume. The job control shell provides commands that
Section 9−−10 − 9 − HP-UX Release 11i: December 2000
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