e command, vi text editor, 320
e file command, ed text editor, 314
:e filename command, vi text editor, 321
echo (GNU shell utility), description, 230
ed, description, 227
ed text editor, 310–315
editors
CD-ROM with book, 284
GNU Emacs, 285
GUI text editors, 286
Vim, 285
Emacs, 16
packages, 49
ELF (Executable and Linking Format), 741–742
ellipsis (...) wildcard, Bash shell, 220
Emacs editor
buffer navigation, 327–328
commands
cursor movement, 327–328
help, 326
typing, 324
copying text, 330–331
deleting text, 328–329
description, 227
help, 325–326
inserting text, 328–329
introduction, 16
moving text, 330–331
reading files, 326–327
saving changes, 331
search and replace, 329–330
shells, 331–332
starting, 322–323
Emacs-Beginner-HOWTO file, 190
history of, 451
introduction, 450
security-related mailing lists, 706
software
installation, 450–451
MTA, 452
MUA, 451
URLs and, 414
Ximian Evolution, 287–289
emergency boot floppy, creating, 623
<emphasis> element, DocBook, 346–347
enable command, print queue, 117
encryption, 655
encrypting documents, GnuPG (GNU Privacy Guard), 672
key pairs, generating, 669
keys, exchanging, 669–671
MD5, PAMs and, 660–662
Engineering packages, description, 49
English module, Perl, 792–793
Ensoniq AudioPCI sound card, Linux driver module, 126
Ensoniq AudioPCI sound cards, Linux driver modules, 127
Ensoniq sound card, Linux driver module, 126
Enterprise-Java-for-Linux-HOWTO file, 190
entertainment, Games and Entertainment packages, 49
env (GNU shell utility), description, 230
environment variables
Bash shell, 214–216
Tcl, 813
Epson chipsets, XFree86 support, 84
errors, Java, exception handling, 856–857
Esc command, vi text editor, 321
ESS Maestro sound cards, Linux driver modules, 127
/etc, description, 201
/etc/cups/classes.conf file, 122
/etc/cups/client.conf file, 123
/etc/cups/cupsd.conf file, 120–121, 122
/etc/cups/lpoptions file, 121
/etc/cups/mime.convs file, 123
/etc/cups/mime.types file, 123
/etc/cups/ppd file, 121–122, 123
/etc/cups/printers.conf file, 120, 122
/etc/exports file, exporting file systems, 540–542
/etc/fstab file, mounting and, 363–364
/etc/group file
fields, 358
NIS and, 528
/etc/host.conf configuration file, TCP/IP, 166
/etc/hosts configuration file, TCP/IP, 166
/etc/hosts.allow configuration file, TCP/IP, 167–168
/etc/hosts.deny configuration file, TCP/IP, 168
/etc/mail directory, files, 466
/etc/mtools.conf file, 368–369
/etc/networks configuration file, TCP/IP, 166
/etc/nsswitch.conf configuration file, TCP/IP, 168
/etc/passwd file, account management, 356–357
/etc/printcap file, 120
/etc/resolv.conf configuration file, TCP/IP, 167
/etc/shadow file, 658–659
/etc/vsftpd.ftpusers file, 501–502
/etc/vsftpd/vsftpd.conf file, 499–502
/etc/xinetd.config, 678
eth0 network device, definition, 163
Ethernet. See also Wi-Fi
address resolution protocol, 954
autoprobing, 961–963
cable modem setup and, 386–388
cables, 954–955
driver modules, 960–961
DSL connections and, 380, 383–384
introduction, 10
multiple cards, 963
overview, 953–954
support, 138
supported cards, 955–960
wireless networks, setup, 388–395
Ethernet-HOWTO file, 190
Evolution mail reader, Mail Server package and, 450
examples, DocBook, 346
exception handling, Java, 856–857
Executable and Linking Format. See ELF
expand (GNU text utility), 237
expert command, 59
expiration information (passwords), 659
expire, INN and, 481
exporting, file systems, NFS and, 540–542
expr (GNU shell utility), description, 230
expressions
regular expressions, 769–772
extensions to filenames, UNIX, 200