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Ubuntu
     64-bit features
     beta testing
     business-related features
     configuring
         CD/DVD drives
         date/time resets
         firewalls
         first updates
         graphics driver installations
         modems
         PCMICA
         power management
         software repositories
         sudo command
         troubleshooting
         wireless networks
     customizing
         desktop backgrounds
         desktop color
         input devices
         mouse configurations
         Preferred Applications
         Removable Drives and Media
         system fonts
     description of
     documentation
     graphical administration tools
     home-related features
     installing
         BIOS settings
         business considerations
         CD-based installations
         CD-ROM requirements
         controllerless modems
         CPU
         deployment plans 2nd
         distribution options
         dmesq command
         DVD-based installations
         fdisk command
         first updates
         GRUB
         hard drive partitions
         hard drive storage
         hardware compatibility
         hardware inventories
         hardware requirements 2nd
         kickstart installation method
         ks.cfg files
         ksconfig command
         legacy hardware
         ls command
         methods of
         minimum hardware requirements
         motherboard-based hardware
         mount command
         overview of
         parted command
         partition strategies 2nd
         passwords
         predeployment checklist
         step-by-step guide 2nd
         system considerations
         USB devices
         user considerations
         user satisfaction
     networking in
     shutting down
     software management tools
     upgrades
     variants of
Ubuntu Project website
     mailing lists
     minimum hardware requirements
Ubuntu rescue disc
UDP (Universal Datagram Protocol)
UID (user IDs) 2nd
umask command
umount command, unmounting floppy disks
undeleting files
unexpanded variables (shells)
unicast addressing
UNIX
     backup levels
     mail application
         sending messages
         shell scripting
unless conditional statements (Perl)
Unreal Tournament 2004 (game)
unrecoverable file system errors
unset() function
unshar command
until loops (Perl)
until statements
updates
     network security
     package updates
     security, Ubuntu website
     software management
     Ubuntu first updates 2nd
upgrades
     Apache Server, file locations
     network security
uplink ports
uptime command
USB devices
     drives
     Linux-USB device over website
     printers, troubleshooting
     scanners
     Ubuntu installation
use function (Perl)
Usenet newsgroups websites
Usenet, posts to (Perl coding example)
USER (shell environment variable)
user accounts
     disk quotas
     displaying information
     elevation of privileges
         changing user identities
         controlling via restricted shells
         granting root privileges on occasion
     Fetchmail, configuring in
     file permissions
     FTP accounts
     GID
     group accounts
     login process
     managing
         /etc/passwd
         adding users
         management tools
         monitoring user activity
         passwords
     MySQL, adding to
     regular accounts, changing identities of
     regular users
     root accounts 2nd 3rd
     stereotypes
     super users
     system users
     UID
     usernames, creating
     verifying information
     viewing
User configuration directive (Apache Server)
user information directives (ftpaccess configuration file), Wu-FTPd server configuration
     displaying
         administrator email address
         files
         prelogin banners
     last modification date notifications
user jobs
user variables (shell scripts)
useradd command 2nd
userdel command
UserDir configuration directive (Apache Server)
usermod command 2nd
usernames
     creating
     format of
     passwords
/usr directory
     Linux file system hosting
     subdirectories of
/usr/sbin/ftpshut files, scheduling FTP server downtime
/usr/share/doc directory
/usr/src/linux-2.6 directory
     /configs subdirectory 2nd
     arch directory
     Documentation directory
     kernel source code
     kernel testing programs
     scripts directory
UTP (Unshielded Twisted Pair) cable
uucp (Unix-to-Unix copy program), copying files
uudecode file.uu command
uuencode file command