Index: U

Symbols & Numbers | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Index: U

-u flag : (apache) 2.1.1. Running Apache from the Command Line (Apache: The Definitive Guide)

uasort( ): 5.8.1. Sorting One Array at a Time (Programming PHP)

A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

UCASE( ) function: 17.2.2. General Functions (Managing & Using MySQL)

ucfirst( ): 4.4.2. Changing Case (Programming PHP)

A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

ucwords( ): A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

4.4.2. Changing Case (Programming PHP)

UDFs (user-defined functions): 14.1. User-Defined Functions (Managing & Using MySQL)

aggregate functions: 14.1. User-Defined Functions (Managing & Using MySQL)

14.1.2. Aggregate Functions (Managing & Using MySQL)
example of: 14.1.2.6. Aggregate example (Managing & Using MySQL)

calling: 14.1.3. Calling a UDF (Managing & Using MySQL)

loading: 14.1.3. Calling a UDF (Managing & Using MySQL)

standard functions: 14.1.1. Standard Functions (Managing & Using MySQL)

UDP (User Datagram Protocol): 1.3.1. What to Know About TCP/IP (Apache: The Definitive Guide)

2.3. Overview of TCP/IP (Linux in a Nutshell)
15.1.1. TCP/IP Concepts (Running Linux)

uid field (passwd file): 5.7.1. The passwd File (Running Linux)

uid variable (tcsh): 8.4.3. Predefined Shell Variables (Linux in a Nutshell)

UIDs (user IDs), NFS, NIS and: 15.5.1. Configuring NFS (Running Linux)

uksort( ): 5.8.1. Sorting One Array at a Time (Programming PHP)

A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

ul command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

ulimit command (bash): 7.7. Built-in Commands (Linux in a Nutshell)

ultra-thin clients: 8.1.1.2. Fat and thin clients (Managing & Using MySQL)

umask( ): 12.4.1. Get It Right the First Time (Programming PHP)

A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)
bash: 7.7. Built-in Commands (Linux in a Nutshell)
ftp: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)
tcsh: 8.9. Built-in Commands (Linux in a Nutshell)

umount command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

6.1.2. Mounting Filesystems (Running Linux)

UMSDOS filesystem: 6.1.1. Filesystem Types (Running Linux)

unabbreviate command (ex): 11.14. Alphabetical Summary of ex Commands (Linux in a Nutshell)

"unable to get hostbyname" error: 2.3. Setting Up a Unix Server (Apache: The Definitive Guide)

unalias command

bash: 7.7. Built-in Commands (Linux in a Nutshell)
tcsh: 8.9. Built-in Commands (Linux in a Nutshell)

uname command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

7.4. Building a New Kernel (Running Linux)

uname2id( ): A.6.13. User and Group Functions (Apache: The Definitive Guide)

unary operators: 2.4.1. Number of Operands (Programming PHP)

- (arithmetic negation) operator: 2.4.5. Arithmetic Operators (Programming PHP)
autoincrement and autodecrement: 2.4.7. Autoincrement and Autodecrement Operators (Programming PHP)

unblock_alarms( ): A.6.16. Timeout and Alarm Functions (Apache: The Definitive Guide)

uncomplete command (tcsh): 8.9. Built-in Commands (Linux in a Nutshell)

uncompress command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

uncompress program: 7.1.1. Using gzip and bzip2 (Running Linux)

uncompressing and extracting PHP and Apache distributions: 1.3. Installing PHP (Programming PHP)

uncompressing and paging (zmore): 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

uncompressing files: 7.1.1. Using gzip and bzip2 (Running Linux)

Undefined subroutine: &Apache::ROOT::perl::test_2epl::some_function called at, message: 22.3.8. Undefined subroutine &Apache::ROOT::perl::test_2epl::some_function called at (Practical mod_perl)

underlining text in PDF files: 10.3.3. Text Attributes (Programming PHP)

underscore (_), pattern matching character: 3.8.4. Pattern Matching (Managing & Using MySQL)

undo command (Emacs): 11.6.2. Emacs and Other Editors (Running Linux)

undo command (ex): 11.14. Alphabetical Summary of ex Commands (Linux in a Nutshell)

undoing edits (vi editor): 9.1.3. Deleting Text and Undoing Changes (Running Linux)

unedit command (CVS): 15.6.7. User Commands (Linux in a Nutshell)

unescape_url( ): A.6.12. Path, Filename, and URL Manipulation Functions (Apache: The Definitive Guide)

unexpand command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

unformatted menus: 7.4. Image Map Directives (Apache: The Definitive Guide)

unhash command (tcsh): 8.9. Built-in Commands (Linux in a Nutshell)

unhide command

ex: 11.14. Alphabetical Summary of ex Commands (Linux in a Nutshell)
GRUB: 4.4.1. Command-Line and Global Menu Commands (Linux in a Nutshell)

Unicode

character encodings supported by XML parser: 11.3.6.1. Character encoding (Programming PHP)
FriBiDi extension, reordering strings for encoded character set: B.1. Optional Extensions Listing (Programming PHP)

Unicode filesystem compatibility: 6.1.1. Filesystem Types (Running Linux)

unicode_start command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

unicode_stop command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

Uniform Resource Identifers (see URIs, length limitations)

Uniform Resource Locators (URLs): 16.1. The World Wide Web (Running Linux)

UNION clause: 3.9.6. Unions (Managing & Using MySQL)

15.2. SQL Commands (Managing & Using MySQL)

union of two sets: 5.10.1. Sets (Programming PHP)

uniq command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

uniqid( ): A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

UNIQUE attribute: 15.2. SQL Commands (Managing & Using MySQL)

EXPLAIN SELECT command and: 5.2.2.2. EXPLAIN SELECT (Managing & Using MySQL)

unique connections, Apache::DBI module and: 20.1.2. When to Use Apache::DBI (and When Not to Use It) (Practical mod_perl)

unique identifiers

for entities: 7.2.2. The Unique Identifier (Managing & Using MySQL)
managing users: 6.3.1.1. User management (Managing & Using MySQL)
translating into primary key columns: 7.4. Physical Database Design (Managing & Using MySQL)

unique indexes, performance benefits of: 5.2.2.1. Index guidelines (Managing & Using MySQL)

unique_id_child_init( ): 21.3. The Module Structure (Apache: The Definitive Guide)

UNIREG (database tool): 1.2. The History of MySQL (Managing & Using MySQL)

Unix

configuring mod_perl: 2.3. Configuring and Starting the mod_perl Server (Practical mod_perl)

installing mod_perl, unpacking source code: 2.2.1. Obtaining and Unpacking the Source Code (Practical mod_perl)

installing PHP: 1.3. Installing PHP (Programming PHP)

locale system in POSIX-style regular expressions: 4.9. POSIX-Style Regular Expressions (Programming PHP)

protocol for databases: 8.3.1. Data Source Names (Programming PHP)

server rebooting, SysV init system: 5.7. Preparing for Machine Reboot (Practical mod_perl)

shell scripting languages, comments in: 2.1.4.1. Shell-style comments (Programming PHP)

writing portable PHP code for: 15.2. Writing Portable Code for Windows and Unix (Programming PHP)

determining the platform: 15.2.1. Determining the Platform (Programming PHP)
end-of-file handling: 15.2.8. End-of-File Handling (Programming PHP)
end-of-line handling: 15.2.7. End-of-Line Handling (Programming PHP)
environment information: 15.2.3. The Environment (Programming PHP)
extensions: 15.2.10. Common Platform-Specific Extensions (Programming PHP)
paths, handling: 15.2.2. Handling Paths Across Platforms (Programming PHP)
remote files: 15.2.6. Remote Files (Programming PHP)
sending mail: 15.2.4. Sending Mail (Programming PHP)
server-specific functions: 15.2.5. Server-Specific Functions (Programming PHP)
shell commands: 15.2.9. External Commands (Programming PHP)

Unix, compared to Linux: 1. Introduction (Linux in a Nutshell)

Unix, history of: 1.2. A Brief History of Linux (Running Linux)

Unix operating system

configuring server: 2.3. Setting Up a Unix Server (Apache: The Definitive Guide)
DBM files: 5.10. DBM Files on Unix (Apache: The Definitive Guide)
making Apache: 1.10.6. Making Apache (Apache: The Definitive Guide)
multiple IP addresses: 1.3.3.1. Multiple sites: Unix (Apache: The Definitive Guide)
passwords: 5.3. Passwords Under Unix (Apache: The Definitive Guide)
permissions: 2.3.5. Unix Permissions (Apache: The Definitive Guide)
restarting Apache: 3.6. Restarts (Apache: The Definitive Guide)
security and: 11. Security (Apache: The Definitive Guide)
suEXEC wrapper: 16.6. suEXEC on Unix (Apache: The Definitive Guide)
versions of: 1.6.3. Which Unix? (Apache: The Definitive Guide)

Unix shell command (sh): 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

Unix systems

configuration files on: 4.1.1. File Locations (Managing & Using MySQL)
error logs on: 4.3.1. The Error Log (Managing & Using MySQL)
installing MySQL on: 2.2. Unix Installation (Managing & Using MySQL)
installing PHP on: 11.2. Installing PHP (Managing & Using MySQL)
server startup/shutdown: 4.2.1. Unix/Linux (Managing & Using MySQL)
shared libraries on: 14.1.3. Calling a UDF (Managing & Using MySQL)

UNIX_TIMESTAMP( ) function: 3.9.4. Functions (Managing & Using MySQL)

17.2.2. General Functions (Managing & Using MySQL)

unlimit command (tcsh): 8.9. Built-in Commands (Linux in a Nutshell)

unlink( ): 3.1. Calling a Function (Programming PHP)

A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

UNLOCK statement: 3.9.3. Table Locking (Managing & Using MySQL)

15.2. SQL Commands (Managing & Using MySQL)

unmap command (ex): 11.14. Alphabetical Summary of ex Commands (Linux in a Nutshell)

unpack( ): A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

unpacking Apache and PHP source distributions: 1.3. Installing PHP (Programming PHP)

unpacking source code: 2.2.1. Obtaining and Unpacking the Source Code (Practical mod_perl)

unparsed XML entities: 11.3.4. Entity Handlers (Programming PHP)

unrecognized format specifier errors: 3.2.2.2. Unrecognized format specifier for... (Practical mod_perl)

unregister_tick_function( ): A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

unserialize( ): A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

unset( ): A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

2.3.4. Garbage Collection (Programming PHP)
bash: 7.7. Built-in Commands (Linux in a Nutshell)
tcsh: 8.9. Built-in Commands (Linux in a Nutshell)

unsetenv command (tcsh): 8.9. Built-in Commands (Linux in a Nutshell)

unshar command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

UNSIGNED attribute: 3.4. MySQL Data Types (Managing & Using MySQL)

unstr command (see strfile command)

untie( ) calls, locking and: 19.3. Flawed Locking Methods (Practical mod_perl)

until command (bash): 7.7. Built-in Commands (Linux in a Nutshell)

up command (lpc): 8.4.12. Controlling Printer Services with lpc (Running Linux)

update command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

CVS: 15.6.7. User Commands (Linux in a Nutshell)

update method (Model class): 9.3.1. A Model for Relational Data (Managing & Using MySQL)

UPDATE privilege: 6.1.2.1. GRANT and REVOKE (Managing & Using MySQL)

update program: 5.5. Shutting Down the System (Running Linux)

update( ) (Publisher class): 9.3.2. Implementing the Model (Managing & Using MySQL)

9.3.2.2. Methods that build and execute SQL (Managing & Using MySQL)

UPDATE statement: 3.6.3. Updates (Managing & Using MySQL)

15.2. SQL Commands (Managing & Using MySQL)
EXPLAIN SELECT command and: 5.2.2.2. EXPLAIN SELECT (Managing & Using MySQL)

update_mtime( ), last-modified header: 16.1.2. Last-Modified Header (Practical mod_perl)

upgrade issues: 3.11.3. Should I Rebuild mod_perl if I Have Upgraded Perl? (Practical mod_perl)

upgrading

compiler: 7.2.2. Upgrading the Compiler (Running Linux)

general procedure: 7.3. General Upgrade Procedure (Running Linux)

kernel patches: 7.4.1.2. Applying patches (Running Linux)

libraries: 7.2.1. Upgrading Libraries (Running Linux)

software

non-RPM: 7.3.3. Upgrading Other Software (Running Linux)
overview: 7.2. Upgrading Software (Running Linux)

upgrading server

CVS and: 5.8.2.2.7. Using CVS for code upgrades (Practical mod_perl)
Internet cluster servers: 5.8.2.1. The server cluster (Practical mod_perl)
Internet single servers: 5.8.2.2. The single server (Practical mod_perl)
Intranet servers: 5.8.1. Upgrading Intranet Servers (Practical mod_perl)
overview: 5.8. Upgrading a Live Server (Practical mod_perl)
Perl code: 5.8.2.2.5. Upgrading Perl code (Practical mod_perl)
port forwarding: 5.8.2.2.2. Upgrading a live server with port forwarding (Practical mod_perl)
prepackaged components: 5.8.2.2.3. Upgrading a live server with prepackaged components (Practical mod_perl)
reusing configuration parameters: 3.1.5. Reusing Configuration Parameters (Practical mod_perl)
scripts and handlers: 5.8.2.2.6. Moving files and restarting the server (Practical mod_perl)
swapping live and backup servers: 5.8.2.2.1. Upgrading live server components by swapping machines (Practical mod_perl)
symbolic links: 5.8.2.2.4. Upgrading a live server using symbolic links (Practical mod_perl)

uploaded files

information about: 7.2. Variables (Programming PHP)
moving: A.2c. Alphabetical Listing of PHP Functions (j-q) (Programming PHP)

uploading files: 12.15. Uploading and Downloading Big Files (Practical mod_perl)

7.4.8. File Uploads (Programming PHP)

security and: 12.3. File Uploads (Programming PHP)

distrusting browser-supplied filenames: 12.3.1. Distrust Browser-Supplied Filenames (Programming PHP)

UPPER( ) function: 17.2.2. General Functions (Managing & Using MySQL)

uppermem command (GRUB): 4.4.2. Command-Line and Menu Entry Commands (Linux in a Nutshell)

uptime command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

URI translation (Apache request processing): 1.4. Apache 1.3 Request Processing Phases (Practical mod_perl)

uri_components structure: A.6.23. URI Functions (Apache: The Definitive Guide)

URIs, length limitations: 1.1.3. Apache CGI Handling with mod_cgi (Practical mod_perl)

URIs (uniform resource identifiers): 1.1. What Does a Web Server Do? (Apache: The Definitive Guide)

API functions: A.6.23. URI Functions (Apache: The Definitive Guide)

URL rewriting, storing state information: 7.6. Maintaining State (Programming PHP)

urldecode( ) function: 4.5.2.2. Query-string encoding (Programming PHP)

urlencode( ): 4.5.2.2. Query-string encoding (Programming PHP)

11.6. Writing Data with PHP (Managing & Using MySQL)
9.6. Dynamically Generated Buttons (Programming PHP)
A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

URLs

1.1. What Does a Web Server Do? (Apache: The Definitive Guide)

1.4. How HTTP Clients Work (Apache: The Definitive Guide)

API functions: A.6.12. Path, Filename, and URL Manipulation Functions (Apache: The Definitive Guide)

decomposing (parse_url( ) function): 4.7.4.4. Decomposing URLs (Programming PHP)

digest authentication: 5.1. Authentication Protocol (Apache: The Definitive Guide)

5.11. Digest Authentication (Apache: The Definitive Guide)

encoding/decoding: A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

encoding/decoding strings as: 4.5.2. URLs (Programming PHP)

button strings: 9.6. Dynamically Generated Buttons (Programming PHP)

extracting from HTML page: 4.10.13.1. Matching (Programming PHP)

functions for: A.1. PHP Functions by Category (Programming PHP)

GET and POST requests: 7.4.1. Methods (Programming PHP)

https://: 7.7. SSL (Programming PHP)

imagemaps: 7.4. Image Map Directives (Apache: The Definitive Guide)

importance of fully qualified: 12.3. One Plain and One mod_perl-Enabled Apache Server (Practical mod_perl)

limiting directives to: 3.3. Block Directives (Apache: The Definitive Guide)

opening remotely with PHP functions, security risks of: 12.2. Filenames (Programming PHP)

parse_url( ) function: A.2c. Alphabetical Listing of PHP Functions (j-q) (Programming PHP)

redirecting upon errors: 3.1.1. ErrorDocument (Apache: The Definitive Guide)

rewriting: 8.2. Rewrite (Apache: The Definitive Guide)

session IDS, passing via: 7.6.2.2. Alternatives to cookies (Programming PHP)

spell-checking: 8.3. Speling (Apache: The Definitive Guide)

translating to names: 21.3. The Module Structure (Apache: The Definitive Guide)

US-ASCII (see ASCII)

USAGE privilege: 6.1.2.1. GRANT and REVOKE (Managing & Using MySQL)

USB devices, support: 12. Windows Compatibility and Samba (Running Linux)

use( ), server startup file: 4.3.4. The Confusion with use( ) in the Server Startup File (Practical mod_perl)

USE INDEX option: 5.2.2.3. Other options (Managing & Using MySQL)

Use of unitialized value at (eval 80) line 12, message: 22.3.7. Use of uninitialized value at (eval 80) line 12 (Practical mod_perl)

USE statement: 15.2. SQL Commands (Managing & Using MySQL)

USE_APACI configuration parameter: 3.1.1. Controlling the Build Process (Practical mod_perl)

USE_APXS configuration parameter: 3.1.1. Controlling the Build Process (Practical mod_perl)

UseCanonicalName directive: 3.4. Other Directives (Apache: The Definitive Guide)

USE_DSO configuration parameter: 3.1.1. Controlling the Build Process (Practical mod_perl)

Usenet newsgroups: 0.. Usenet Newsgroups (Linux in a Nutshell)

user accounts

creating: 3.2.1. Creating a User Account (Running Linux)

3.2.1. Creating a User Account (Running Linux)
5.7.5. Creating Accounts (Running Linux)

deleting: 5.7.6. Deleting and Disabling Accounts (Running Linux)

disabling: 5.7.6. Deleting and Disabling Accounts (Running Linux)

management: 5.7. Managing User Accounts (Running Linux)

passwd file: 5.7.1. The passwd File (Running Linux)

5.7.1. The passwd File (Running Linux)

shadow passwords: 5.7.2. Shadow Passwords (Running Linux)

modifying: 5.7.7. Modifying User Accounts (Running Linux)

user groups: 5.7.4. The Group File (Running Linux)

User-Agent headers: 7.1. HTTP Basics (Programming PHP)

user command (ftp): 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

user data

decoding, using PHP: 11.1. Introducing PHP (Managing & Using MySQL)
securing, using PHP: 11.4. Securing User Data (Managing & Using MySQL)

User Datagram Protocol (UDP): 1.3.1. What to Know About TCP/IP (Apache: The Definitive Guide)

15.1.1. TCP/IP Concepts (Running Linux)

user-defined functions: 14.1. User-Defined Functions (Managing & Using MySQL)

3.1. Calling a Function (Programming PHP)

sorting arrays with: A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

user-defined order, sorting arrays in: 5.8.1. Sorting One Array at a Time (Programming PHP)

5.8.1. Sorting One Array at a Time (Programming PHP)

User directive: 2.3.1.1. User (Apache: The Definitive Guide)

12.6.4. Directives (Apache: The Definitive Guide)
12.6.5. Candidacy Functions (Apache: The Definitive Guide)
12.6.5. Candidacy Functions (Apache: The Definitive Guide)
12.6.5. Candidacy Functions (Apache: The Definitive Guide)
12.6.5. Candidacy Functions (Apache: The Definitive Guide)
12.6.5. Candidacy Functions (Apache: The Definitive Guide)
12.6.5. Candidacy Functions (Apache: The Definitive Guide)

USER environment variable (tcsh): 8.4.6. Environment Variables (Linux in a Nutshell)

USER( ) function: 17.2.2. General Functions (Managing & Using MySQL)

user groups and distribution packages: 2.1.1. Getting Linux via Mail Order or Other Hard Media (Running Linux)

user IDs

database security and: 6.1. Database Security (Managing & Using MySQL)

identifying users to MySQL: 6.1.2.1. GRANT and REVOKE (Managing & Using MySQL)

mysql user: 2.2.1. Binary (Tarball) Distributions (Managing & Using MySQL)

mysql_change_user( ) and: 18.2. Functions (Managing & Using MySQL)

19.2. Functions (Managing & Using MySQL)

operating system security and: 6.2.1. Operating System Security (Managing & Using MySQL)

privilege tables and: 6.1.2.2. The security tables (Managing & Using MySQL)

root user: 6.1.1. User Management (Managing & Using MySQL)

unique identifiers: 6.3.1.1. User management (Managing & Using MySQL)

user interfaces

desktop environments: 1.5.6. KDE and GNOME (Running Linux)
X Window System: 1.5.5. The X Window System (Running Linux)

user login times, tracking (ruptime): 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

user management

application servers and: 6.3.1.1. User management (Managing & Using MySQL)
roles, working with: 6.1.1. User Management (Managing & Using MySQL)
security issues for DBAs: 6.1.1. User Management (Managing & Using MySQL)
types of users: 6.1.1. User Management (Managing & Using MySQL)
user privileges in security tables: 6.1.2.2. The security tables (Managing & Using MySQL)

user property

GNU JDBC driver: 13.1.2.2. Driver manager connectivity (Managing & Using MySQL)
twz JDBC driver: 13.1.2.2. Driver manager connectivity (Managing & Using MySQL)

user table: 6.1.2.2. The security tables (Managing & Using MySQL)

primary key of: 6.1.2.2. The security tables (Managing & Using MySQL)
schema for: 6.1.2.2. The security tables (Managing & Using MySQL)

user variable (tcsh): 8.4.3. Predefined Shell Variables (Linux in a Nutshell)

useradd command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

useradd utility

binary distributions: 2.2.1. Binary (Tarball) Distributions (Managing & Using MySQL)
source distributions: 2.2.3. Source Distributions (Managing & Using MySQL)

userdel command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

UserDir directive: 8.1.1. A Subtle Problem (Apache: The Definitive Guide)

16.1.2.1. httpd.conf (Running Linux)

user_error( ): A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

usermod command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

username field (passwd file): 5.7.1. The passwd File (Running Linux)

usernames

authenticating: 7.5.4. Authentication (Programming PHP)
current, for PHP script executing: A.2b. Alphabetical Listing of PHP Functions (f-i) (Programming PHP)
security problems with: 12.2. Filenames (Programming PHP)

users

API functions: A.6.13. User and Group Functions (Apache: The Definitive Guide)
automatic information on: 5.14. Automatic User Information (Apache: The Definitive Guide)
checking if access allowed: 21.3. The Module Structure (Apache: The Definitive Guide)
creating: 2.3.1. webuser and webgroup (Apache: The Definitive Guide)
DBM files: 5.10. DBM Files on Unix (Apache: The Definitive Guide)
dummy and cron: 8.2. Scheduling Jobs Using cron (Running Linux)
finding login names for: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)
home directories: 8.1.1. A Subtle Problem (Apache: The Definitive Guide)
home directories, backups: 8.1.1. Simple Backups (Running Linux)
logged in, logs: 8.3. Managing System Logs (Running Linux)
management commands: 2.1.14. Users (Linux in a Nutshell)
performance and: 7.2. Asking the Right Questions (Practical mod_perl)
permissions (see permissions)
Samba, adding: 12.2.2.3. Adding users (Running Linux)
security and: 11.1. Internal and External Users (Apache: The Definitive Guide)
virtual machines: C.4. Giving Each User a Virtual Machine (Practical mod_perl)

users command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

useUnicode property (GNU JDBC driver): 13.1.2.2. Driver manager connectivity (Managing & Using MySQL)

usleep( ): A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

usort( ): 5.8.1. Sorting One Array at a Time (Programming PHP)

A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)
anonymous function, using with: 3.7. Anonymous Functions (Programming PHP)

/usr directory

/usr/lib directory: 13.1.7. More Fun with Libraries (Running Linux)
/usr/X11R6 directory: 10.3. Installing XFree86 (Running Linux)

USR1 signal: 5.3.1. kill Signals for Stopping and Restarting Apache (Practical mod_perl)

/usr/backups directory: 4.4.2. mysqlhotcopy (Managing & Using MySQL)

usr/bin directory: 4.16. Important Directories (Running Linux)

usr/include directory: 4.16. Important Directories (Running Linux)

/usr/lib directory: 14.1.3. Calling a UDF (Managing & Using MySQL)

usr/lib/X11 directory: 4.16. Important Directories (Running Linux)

usr/local directory: 4.16. Important Directories (Running Linux)

usr/sbin directory: 4.16. Important Directories (Running Linux)

usr/src directory: 4.16. Important Directories (Running Linux)

source distributions: 7.3.3. Upgrading Other Software (Running Linux)

usr/src/linux directory: 7.4. Building a New Kernel (Running Linux)

kernel sources and backups: 8.1.1. Simple Backups (Running Linux)

UTF-8 character encoding: 11.3.6.1. Character encoding (Programming PHP)

printing high-bit ASCII characters: 9.5.2. TrueType Fonts (Programming PHP)

utilities: 1.5.1. Basic Commands and Utilities (Running Linux)

4.4.1. Directories (Running Linux)

(see also commands)

amprapmon: 5.11.4. Tracking and Terminating Hanging Processes (Practical mod_perl)

ApacheBench: 9.1.1. ApacheBench (Practical mod_perl)

Apache::Recorder: 9.1.4. Other Web Server Benchmark Utilities (Practical mod_perl)

archiving and compressing files: 7.1. Archive and Compression Utilities (Running Linux)

chkconfig: 5.7. Preparing for Machine Reboot (Practical mod_perl)

fdisk: 2.2.4. Repartitioning Your Drives (Running Linux)

httperf: 9.1.2. httperf (Practical mod_perl)

http_load: 9.1.3. http_load (Practical mod_perl)

HTTP::Monkeywrench: 9.1.4. Other Web Server Benchmark Utilities (Practical mod_perl)

HTTP::RecordedSession: 9.1.4. Other Web Server Benchmark Utilities (Practical mod_perl)

HTTP::WebTest: 9.1.4. Other Web Server Benchmark Utilities (Practical mod_perl)

laptop computer support: 1.5.8. Laptop Support (Running Linux)

MTools: 12.1. Sharing Disks with MTools (Running Linux)

networking: 1.5.7. Networking (Running Linux)

overview: 1.5.1. Basic Commands and Utilities (Running Linux)

parent processes, identifying: 5.3.3. Finding the Right Apache PID (Practical mod_perl)

printing: 8.4.4. Checking Print Utilities (Running Linux)

process memory consumption monitoring: 9.3. Process Memory Measurements (Practical mod_perl)

programming: 1.5.4. Programming Languages and Utilities (Running Linux)

1.5.4. Programming Languages and Utilities (Running Linux)

text-processing: 1.5.2. Text Processing and Word Processing (Running Linux)

top, monitoring system health: 5.10.1. Interactive Monitoring (Practical mod_perl)

tpage: D.5. Processing Templates (Practical mod_perl)

ttree: D.3. Typical Uses (Practical mod_perl)

tunelp: 8.4.13. Printer Optimization (Running Linux)

user accounts, creating: 3.2.1. Creating a User Account (Running Linux)

Windows/MS-DOS compatibility: 1.5.9. Interfacing with Windows and MS-DOS (Running Linux)

utilities taglib, AxKit: E.3.5. Utilities Taglib (Practical mod_perl)

utmp file: 8.3. Managing System Logs (Running Linux)

uudecode( ): A.6.11. String Functions (Apache: The Definitive Guide)

uudecode command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

uuencode command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

uuidgen command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

UUIDs (Universal Unique Identifiers), creating (uuidgen): 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

Symbols & Numbers | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z