daemon a program which runs for an extended period (usually "forever") to handle
requests for service as needed
database An indexed collection of information which can be accessed, modified and queried
using a query language such as SQL. Popular databases applications for Linux
include the commercial Oracle product and Informix-SE.
datagram A packet which includes both the source and destination addresses provided by
the user, and not the network. Datagrams can also include data.
DBM DataBase Management, a library of functions which maintain key-content pairs in
a data base
dd copies a file (from standard input to standard output, by default) using
specific input and output blocksizes, while optionally performing conversions on
de Icaza, Miguel the lead developer of the GNOME desktop
debug To rid hardware or software of errors, or bugs
Defragment The process of taking pieces of files that are scattered or fragmented on the
hard disk and unifying them. Linux has an intelligent file system. This
filesystem makes de-fragmenting unnecessary, because hardly any fragments occur
in the first place.
delta The set of changes that RCS records for an RCS file
denial of service A denial of service attack is when an attacker consumes the resources on your
computer for things it was not intended to be doing, thus preventing normal use
of your network resources for legitimite purposes.
device In Linux devices are accessed as files which are located in the /dev directory.
The entries contains the device numbers used by the kernel.
device driver code that controls and communicate with a device such as a graphics card, sound
card or other peripherals
df reports the amount of disk space used by the specified files, and by each
directory in the hierarchies rooted at the specified files.
DHCP Dynamic Host Configuration Protocol: DHCP's purpose is to enable individual
computers on an IP network to extract their configurations from a server (the 'DHCP
server') or servers, in particular, servers that have no exact information about
the individual computers until they request the information. The overall purpose
of this is to reduce the work necessary to administer a large IP network.
diff find differences between two files
digest A collection of new messages mailed to the members of an archived list as one
message. A list is called digested when it is archived and, periodically, a
digest is sent out
dircolors outputs a sequence of shell commands to define the desired color output from ls
(and dir, etc.).
directory A file that contains the names of other files. Linux has a directory called root
(represented by /), along with subdirectories.
Directory Service A directory is like a database, but tends to contain more descriptive,
attribute-based information. The information in a directory is generally read
much more often than it is written. As a consequence, directories don't usually
implement the complicated transaction or roll-back schemes that regular
databases use for doing high-volume complex updates. Directory updates are
typically simple all-or-nothing changes, if they are allowed at all
DLL Dynamically Linked Library, a library linked to an executable program at
DNS Domain Name System. DNS converts machine names to the IP addresses that all
machines on the net have. It maps from name to address and from address to name
Document Object Model An application programming interface (API) for HTML and XML documents. It
defines the logical structure of documents and the way a document is accessed
and manipulated. In the DOM specification, the term "document" is used in the
broad sense - increasingly, XML is being used as a way of representing many
different kinds of information that may be stored in diverse systems, and much
of this would traditionally be seen as data rather than as documents.
Nevertheless, XML presents this data as documents, and the DOM may be used to
manage this data.
domain name A name "key" that is used by NIS clients to be able to locate a suitable NIS
server that serves that domainname key. Please note that this does not
necessarily have anything at all to do with the DNS "domain" (machine name) of
dot file A file that is hidden from general file browsing partly because it contains
important configuration options
downtime The length of time a computer is not functioning (down). It is the reverse of
Draeker, Scott the President of Loki Entertainment, a key gaming Linux developer. Loki have
released a number of important Linux games including Civilization: Call to
Power, Myth II, Railroad Tycoon II, Eric's Ultimate Solitaire, Heretic II,
Heroes III & Quake III
DSML Directory Services Markup Language, an XML dialect for working with directory
DSP Digital signal processors - specialized microprocessors that perform the same
task repetitively at very high frequency. Most often used in telecommunications
and multimedia application platforms
du tells you how much disk space your files occupy
dumb terminal a display and input device that doesn't process data and input locally. Instead
it transmits input to a computer to which it is connected and displays the
DVI DeVice Independent: a typesetter independent file which is generated from TeX
dxpc An X protocol compressor designed to improve the speed of X11 applications run
over low-bandwidth links (such as dialup PPP connections)
Last Updated Saturday, October 29 2005 @ 03:11 AM EDT