OEMs (original equipment manufacturers), Linux's Roots in UNIX
Ogg Vorbis format, Playing music with XMMS Audio Player, Performing audio file conversion and compression, Compressing music files with oggenc
oggenc command, Compressing music files with oggenc
oggenc utility, Converting audio files with Sox
Ogle video player, Playing Video
OLDPWD environment variable, Common shell environment variables
one-command actions, The "if… then" statements
open source
StarOffice, Using Red Hat Linux as an Application Platform
open-source software
compared to free software, The Culture of Free Software
OpenGL support
gaming, Configuring video cards for gaming
opening firewalls
Samba, Firewall open?
OpenOffice, Using Red Hat Linux as an Application Platform, Using OpenOffice
Calc, Using OpenOffice
Draw, Using OpenOffice
Impress, Other Word Processors
launching applications, Using OpenOffice
Math, Using OpenOffice
Microsoft Office and, Using Red Hat Linux as an Application Platform
Writer, Using OpenOffice
OpenSSH
VPN and, Configuring a Virtual Private Network Connection
operating systems
components of, What Is an Operating System?
partitioning and, Partitioning your disks
OperatorChars option, sendmail, sendmail options
operators
test expressions, The "if… then" statements
Option button (login screen), Logging in to Red Hat Linux
options
command line, Using the Shell in Red Hat Linux
organization parameter, inn.conf file, General parameters
OS level, Samba, Browse options
OSS/Free
sound card support, Listening to Audio
OSTYPE environment variable, Common shell environment variables
outdoor antennas, wireless networks, Using outdoor antennas
outgoing connections, public servers, Connecting a Public Server
OUTPUT chain rules, Example 1: Firewall for shared Internet connection (plus servers)
overrides, Apache server, Setting access options and overrides, Table 21-3: Special Access Features for the AllowOverride Directive
overwrite parameter, FTP server, Enabling overwrite
ovmethod parameter, inn.conf file, General parameters