d (sed command), 248
D (sed command), 249
d command, ed text editor, 314
D command, vi text editor, 319
[daemon] section, gdm, 258-260
daemons, 562
atd, 569
crond, 571
mail-transport agents, 453
DARPA (Defense Advanced Research Projects Agency), 141. See also ARPA
data abstraction, Java, 844-845
data link layer, OSI model, 139
data protection, 651
data types, Java
nonprimitive, 852-853
primitive, 851-852
database server, description, 80
databases
CD-ROM with book, 284
Tripwire application, initializing, 674
date (GNU shell utility), 229
description, 229
date, system settings, 360
date and time commands, 898
DB2-HOWTO file, 190
dd (GNU file utility), 233
description, 231
dd command, 59
GNU, 233
vi text editor, 319
DDC (Display Data Channel), command interface, 86
[debug] section, gdm, 263
debugging
configuring support, 640
gdb, 16
decryption, 655
decrypting documents, GnuPG (GNU Privacy Guard), 672
delete command, FTP, 495
deleting
characters, GNU files, 238-239
files, Nautilus, 204
lines
ed text editor, 313
vi text editor, 317
text
Emacs editor, 328-329
vi text editor, 319
denial of service (security threats), 650, 655
desktop
GNOME, 9
KDE, 9
packages, 49
X Window System, 9
/dev, description, 201
/dev/audio file, 131
/dev/audiol file, 131
/dev/dep file, 131
development packages, installation, 50
Development Tools packages, description, 50
device drivers, 579-580
kernel configuration and, 625
loadable driver modules, 581
loading/unloading, 582-583
modules.conf file, 583-584
device files, 580-581
device names
backup devices, 575
disk drives, 930
device option, kickstart, 66
Device section, XF86Config file, 91, 93-94
deviceprobe option, kickstart, 66
devices
audio, kernel configuration, 636-638
block devices, 580-581
character, 581
kernel configuration, 634
file system, mounting, 361-363
IDE, configuring support, 629, 631
infrared, kernel configuration, 633
installation, manual, 55
network, 581
network-device names, TCP/IP, 163-164
overview, 579
SCSI, configuring support, 632
serial device names, 968-969
sound cards, names, 131
video, kernel configuration, 636-638
Devices tab, Network Configuration tool, 165
/dev/midiDO - 03 file, 131
/dev/mixer file, 131
/dev/mixerl file, 131
/dev/sequencer file, 131
df (GNU file utility), 234-235
description, 231
3Dfx video cards, XFree86 support, 84
DHCP (Dynamic Host Configuration Protocol)
host name configuration, 43
IP addresses and, 150
network card, IP address, 42-43
newsgroups and, 481
TCP/IP and, 156
dial-up networking
cable modem comparison, 379
DNS and, 396
DSL comparison, 379
Internet connections and, 378-379
IP addresses, 396
PPP accounts, 398-404
CHAP authentication, 404-405
PAP authentication, 404-405
server setup, 407-409
serial-communication software, 395
SLIP accounts, 397-398
TCP/IP and, 395
diff, description, 227
dig (Domain Internet Groper), BIND system, 511, 512-515
digital certificates
request generation, 445-446
test certificates, 446
digital signatures, 655, 667-668
dir (GNU file utility), description, 231
dir command, FTP, 495
dircolors (GNU file utility), description, 231
directives, configuration, Apache Web server, 423-424, 426-431
directories
/ (root directory), 201
Apache Web server configuration, 423
/bin, 201
/boot, 201
changing, 205-206
/dev, 201
/etc, 201
file system and, 199
GNU, 233
/home, 201
/lib, 201
listing, 207-210
/lost+found, 201
management commands, 896
/mnt, 201
navigation commands, 205-206
permissions, 207-210
/proc, 201
/root, 201
root directory, 199
Samba, creating for, 546
/sbin, 201
shell prompt, 206-207
/tmp, 201
/usr, 201
subdirectories, 202
/var, 201
subdirectories, 202-203
dirname (GNU shell utility), description, 230
disable command, print queue, 117
disclosure of information (security threats), 650
disconnect command, FTP, 495
disk drives
controller types, 925-927
device names, 930
logical organization, 928-930
physical organization, 927-928
Disk Druid
manual partitioning, 37
partitioning and, 22
Diskless-HOWTO file, 190
disks, copying, GNU, 233
display, 76-78. See also monitors
system settings, 360
X server and, 82
settings adjustment, 101
DISPLAY Bash environment variable, 216
display manager
GNOME (gdm), 254-258
init and, 252-254
KDE (kdm), kdmrc file example, 268-269
Display Settings utility, X server display, 101
display-IP_address:0 command, 59
DISPLAYMANAGER variable, defining, 254
3Dlabs video cards, XFree86 support, 84
DMZ, 655
DNS (Domain Name System)
ARPANET and, 508
BIND system, 510-511
caching name server
configuration, 517-526
starting, 526-527
configuration
caching name server, 517-526
resolver library, 516-517
country code domains, 510
definition, 508
dial-up networking and, 396
FQDN, 510
hierarchical domain names, 509-510
IP addresses and, 150-152
primary name server, configuration, 527-528
root domain, 509-510
top-level domains, 509-510
utility programs, dig, 512-515
zone files, resource record types, 521
DNS Name Server, packages, 50
DNS tab, Network Configuration tool, 165
DNS-HOWTO file, 190
DocBook
case sensitivity, 342
cautions, 346
character formatting, 346-347
DTD, 339
examples, 346
figures, 345-346
image objects, 344-345
<important> element, 346
introduction, 338-339
itemized lists, 344
links, 347
media objects, 344-345
notes, 346
ordered lists, 344
sample.xml, 339-341
sections, 343
stylesheet processor, 339
stylesheets, 339-343
tables, 345
text editors and, 339
tips, 346
variable lists, 344
warnings, 346
DocBook-Demystification-HOWTO file, 190
DocBook-OpenJade-SGML-XML-HOWTO file, 190
documentation
GNU software development tools, 713-715
kernel variables, 595
online
HOWTO files, 188-199
man pages, 186-188
Samba, SSL support, 545
domain name
NIS client, 530-531
URLs, 415
DoS (denial of service), 655
DOS
CD-ROM with book, 284
commands, mtools utilities, 369-370
file system mounting, 364-365
floppy disks
formatting, 371-372
mounting, 364-365
installer, booting, 31
DOS-to-Linux-HOWTO file, 190
\DOSUTIL subdirectory, FIPS utility, 28
DOS-Win-to-Linux-HOWTO file, 190
dot clock, video cards, 78
double data type (Java), 852
downloading
FTP and, 492
Linux, 4
drawing, xfig, CD-ROM files, 299
DRI section, XF86Config file, 91
driver modules, 581
Ethernet, 960-961
driverdisk command, 59
driverdisk option, kickstart, 66
drivers
console, kernel configuration, 639
installation and, 20
I2O, configuring support, 633
DSL (Digital Subscriber Line)
availability check, 382
cable modem comparison, 379
connections, 379-384
description, 12
dial-up comparison, 379
interference, 382
introduction, 378
LANs and, 383
DSL-HOWTO file, 190
DSSSL (Document Style Semantics and Specification Language), DocBook and, 342
DTDs (document type definition), DocBook, 339
du (GNU file utility), 234-235
description, 231
dual-homed host, 655
firewalls, 684-685
DVD-HOWTO file, 190
dw command, vi text editor, 319