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Index: U

UDP (User Datagram Protocol): 15.1.1. TCP/IP Concepts
uid field (passwd file): 5.7.1. The passwd File
UIDs (user IDs), NFS, NIS and: 15.5.1. Configuring NFS
umount command: 6.1.2. Mounting Filesystems
UMSDOS filesystem: 6.1.1. Filesystem Types
uname command: 7.4. Building a New Kernel
uncompress program: 7.1.1. Using gzip and bzip2
uncompressing files: 7.1.1. Using gzip and bzip2
undo command (Emacs): 11.6.2. Emacs and Other Editors
undoing edits (vi editor): 9.1.3. Deleting Text and Undoing Changes
Unicode filesystem compatibility: 6.1.1. Filesystem Types
Uniform Resource Locators (URLs): 16.1. The World Wide Web
Unix, history of: 1.2. A Brief History of Linux
up command (lpc): 8.4.12. Controlling Printer Services with lpc
update program: 5.5. Shutting Down the System
upgrading
compiler: 7.2.2. Upgrading the Compiler
general procedure: 7.3. General Upgrade Procedure
kernel patches: 7.4.1.2. Applying patches
libraries: 7.2.1. Upgrading Libraries
software
non-RPM: 7.3.3. Upgrading Other Software
overview: 7.2. Upgrading Software
URLs (Uniform Resource Locators): 16.1. The World Wide Web
USB devices, support: 12. Windows Compatibility and Samba
user accounts
creating: 3.2.1. Creating a User Account
3.2.1. Creating a User Account
5.7.5. Creating Accounts
deleting: 5.7.6. Deleting and Disabling Accounts
disabling: 5.7.6. Deleting and Disabling Accounts
management: 5.7. Managing User Accounts
passwd file: 5.7.1. The passwd File
5.7.1. The passwd File
shadow passwords: 5.7.2. Shadow Passwords
modifying: 5.7.7. Modifying User Accounts
user groups: 5.7.4. The Group File
User Datagram Protocol (UDP): 15.1.1. TCP/IP Concepts
user groups and distribution packages: 2.1.1. Getting Linux via Mail Order or Other Hard Media
user interfaces
desktop environments: 1.5.6. KDE and GNOME
X Window System: 1.5.5. The X Window System
UserDir directive: 16.1.2.1. httpd.conf
username field (passwd file): 5.7.1. The passwd File
users
dummy and cron: 8.2. Scheduling Jobs Using cron
home directories, backups: 8.1.1. Simple Backups
logged in, logs: 8.3. Managing System Logs
Samba, adding: 12.2.2.3. Adding users
/usr directory
/usr/lib directory: 13.1.7. More Fun with Libraries
/usr/X11R6 directory: 10.3. Installing XFree86
usr/bin directory: 4.16. Important Directories
usr/include directory: 4.16. Important Directories
usr/lib directory: 4.16. Important Directories
backups and: 8.1.1. Simple Backups
usr/lib/X11 directory: 4.16. Important Directories
usr/local directory: 4.16. Important Directories
usr/sbin directory: 4.16. Important Directories
usr/src directory: 4.16. Important Directories
source distributions: 7.3.3. Upgrading Other Software
usr/src/linux directory: 7.4. Building a New Kernel
kernel sources and backups: 8.1.1. Simple Backups
utilities: 1.5.1. Basic Commands and Utilities
4.4.1. Directories
(see also commands)
archiving and compressing files: 7.1. Archive and Compression Utilities
fdisk: 2.2.4. Repartitioning Your Drives
laptop computer support: 1.5.8. Laptop Support
MTools: 12.1. Sharing Disks with MTools
networking: 1.5.7. Networking
overview: 1.5.1. Basic Commands and Utilities
printing: 8.4.4. Checking Print Utilities
programming: 1.5.4. Programming Languages and Utilities
1.5.4. Programming Languages and Utilities
text-processing: 1.5.2. Text Processing and Word Processing
tunelp: 8.4.13. Printer Optimization
user accounts, creating: 3.2.1. Creating a User Account
Windows/MS-DOS compatibility: 1.5.9. Interfacing with Windows and MS-DOS
utmp file: 8.3. Managing System Logs


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