glossary.9 (2010 09)

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glossary(9) glossary(9)
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 continue stopped process groups in either the foreground or back-
ground. The terminal driver also stops a background process group when any member of the background
process group attempts to read from or write to the user’s terminal. This allows the user to finish or
suspend the foreground process group without interruption and continue the stopped background
process group at a more convenient time.
See stty (1), sh(1), and related shell entries for usage and installation details, and the shell entries plus
signal (2) and termio (7) for implementation details.
kernel
The HP-UX operating system. The kernel is the executable code responsible for managing the computer’s
resources, such as allocating memory, creating processes, and scheduling programs for execution. The
kernel resides in RAM (random access memory) whenever HP-UX is running.
LANG
An environment variable used to inform a computer process of the user’s requirements for native
language, local customs, and coded character set.
legacy device special file
A special file associated with an I/O device (tape, disk, and so on), locked to a particular physical
hardware path, containing hardware path information such as SCSI bus, target, and LUN in the device
file name and minor number. See intro (7) for more information.
legacy hardware path
A hardware path following the legacy format conventions, that is, a series of bus-nexus addresses
separated by
/ (slash) characters, leading to a host bus adapter (HBA). Beneath the HBA, additional
address elements are separated by . (period) characters. All elements are represented in decimal. See
intro (7) for more information.
library
A file containing a set of subroutines and variables that can be accessed by user programs. Libraries can
be either archives or shared libraries. For example,
/usr/lib/libc.a
and /usr/lib/libc.sl are
libraries containings all functions of Section 2 and all functions of Section 3 that are marked (3C) and
(3S) in the HP-UX Reference . Similarly,
/usr/lib/libm.a
and /usr/lib/libm.sl are libraries
containing all functions in Section 3 that are marked (3M) in the HP-UX Reference . See intro (2) and
intro (3C).
LIF
See Logical Interchange Format.
line
A sequence of text characters consisting of zero or more nonnewline characters plus a terminating new-
line character.
link
Link is a synonym for directory entry. It is an object that associates a file name with any type of file.
The information constituting a link includes the name of the file and where the contents of that file can
be found on a mass storage medium. One physical file can have several links to it. Several directory
entries can associate names with a given file. If the links appear in different directories, the file may or
may not have the same name in each. However, if the links appear in one directory, each link must have
a unique name in that directory. Multiple links to directories are not allowed (except as created by a user
with appropriate privileges). See ln(1), link (2), unlink(2), and symbolic link.
Also, to prepare a program for execution; see linker.
HP-UX 11i Version 3: September 2010 − 11 − Hewlett-Packard Company 11