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Package
- A package is a standard format for the distribution, installation, and
maintenance of software.
Parent Directory
- A parent directory is a directory that contains other directories. For
example, the /export directory is the parent directory of /home.
Partition
A partition is a logical subdivision of a physical disk drive that is treated
as an individual device. A partition consists of a range of physical disk
cylinders. Partitions are defined in the disk label. Partitions may contain file
systems or may be treated as raw devices (for example, swap).
Password
- A password is a mechanism for protecting your system from unauthorized access
by others.
Password Aging
- Password aging may be used to force users to change their password at regular
intervals.
Peripheral Device
- A peripheral device is a piece of hardware, such as a mouse or a printer,
that performs a specific function and is connected to a workstation.
Permissions
- Permissions are attributes of a file or directory which specifies who has
read, write, or execution access.
ping
- ping is a command which requests a response from a specified host. ping
uses the Internet control message protocol (ICMP) ECHO_REQUEST datagram
to elicit an ICMP ECHO_RESPONSE from the specified host or network
gateway. If the host responds, ping will display the message host
is alive. Otherwise after the default timeout of 20 seconds, it will
display the message no answer from host. When using ping for
fault isolation, first communicate with the local host to verify that the local
network interface is running.
Plain
File
- A plain file is a file containing data. The data may be text or other
content.
Port
- A port is a pathway used to connect communications on a computer. A port can
be made up of both hardware (pins and connectors) and software (device driver).
Types of ports include serial, parallel, small computer system interface (SCSI),
network, and Ethernet.
Port Monitors
- A port monitor continuously "listens" for requests on a port, such
as login or local/remote print requests.
POSIX
-
POSIX (Portable Operating Systems Interface ) is a standard developed and
being developed by individuals from companies throughout the industry. Largely
based on the System V Interface, the original standard was adopted in 1988.
Adopted POSIX Standards
- POSIX.1 - Base system interfaces for C programs. Adopted 1988, revised
1990.
- POSIX.2 - Shell and Utilities, including interactive utilities and a few C
interfaces. Adopted 1992.
- POSIX.3 - Test methods for measuring conformance to POSIX. Adopted 1991.
- POSIX.3.1 - Test methods (assertions) for measuring conformance to
POSIX.1. Adopted 1993.
- POSIX.4 - Real time extensions to POSIX.1. Adopted 1993.
- POSIX.5 - Ada language binding to POSIX.1. Describes the same
functionality as POSIX.1, accessible from Ada programs. Adopted 1992.
- POSIX.9 - FORTRAN77 language binding to POSIX.1. Describes the same
functionality as POSIX.1, accessible from FORTRAN77 programs. Adopted 1992.
POST
- POST (Power-On Self-Tests) is a series of diagnostic checks run by the
hardware each time the system is powered on.
PostScript
- PostScriptTM is a page description language published by Adobe
Systems, Incorporated. PostScript describes the appearance of text and graphics
on printed pages. The best-known page-description language, PostScript uses
English-like commands to control page layout and to load and scale outline
fonts.
Prestoserve
- The Prestoserve product is a combination of the Prestoserve NVRAM hardware
and the Prestoserve software. Prestoserve improves disk I/O performance by
caching synchronous disk writes.
Primary Group
- All users belong to at least one group, their primary group. The primary
group is identified by the group field of the user account stored in the /etc/passwd
file. The primary group is the group ID stamped on a file when a file is
created.
Primary Memory
-
Primary memory is another term for random access memory (RAM), which is the
main computer memory.
Printer
- A printer is a peripheral device that receives formatted input and produces
hardcopy output (typically on paper or transparency film).
Printer
Client
- A printer client is a system that is using a printer attached to a different
system (the printer server).
Printer Name
- Printer names are character names used to identify printers. A printer name
cannot be more than 14 characters in length. This name should be the same as the
printer name on the printer server.
Printer Port
- The printer port is the serial port to which the printer is connected -
usually A or B. Refer to the label on the system where the cable is plugged.
Printer Server
- A print server is a system to which a printer is directly connected. A print
server can handle requests from one or more printer clients.
Printer Type
- The printer type is used to identify control sequences needed to initialize a
local printer or to apply special filters if necessary. An example of printer
type is PostScript, a translation language.
Product Box
- Product box refers to the specific product options that were purchased and
are to be installed. The installer needs to register what product was purchased
and select only those options or packages that the product contains.
profile
- The $HOME/.profile file is an initialization file that is executed
after the /etc/profile when logging in to the Bourne or Korn shell. The
file contains user preferences for variable settings. If the ENV
variable is set to .kshrc file will execute every time a new shell begins execution. The $HOME/.profile
is copied from the /etc/skel/local.profile file by admintool
when creating a new account.
PROM
- Programmable read-only memory (PROM) is a chip containing permanent,
nonvolatile memory and a limited set of commands used to test the system and
start the boot process.
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