Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Z] 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 |