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Index: V

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

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

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

Valgrind package: 14.1.2. Examining a Core File (Running Linux)

validating

credit-card numbers with Luhn checksum: 4.9.3.1. Matching (Programming PHP)

forms: 7.4.9. Form Validation (Programming PHP)

validation, memory sharing: 10.1.2. Memory-Sharing Validation (Practical mod_perl)

Value of $x may be unavailable at, message: 22.2.2. Value of $x may be unavailable at - line 5 (Practical mod_perl)

Value of $x will not stay shared at, message: 22.2.1. Value of $x will not stay shared at - line 5 (Practical mod_perl)

value options, with SELECT statement: 17.1.3. Comparison Operators (Managing & Using MySQL)

values

passing variables by: 14.2.5. Passing Variables (Practical mod_perl)

XPathScript API and: E.4.1.1. Extracting values (Practical mod_perl)

var directory: 4.16. Important Directories (Running Linux)

.var files (see type maps)

VARCHAR BINARY data type: 3.4.3. Binary Data Types (Managing & Using MySQL)

VARCHAR data type: 3.4. MySQL Data Types (Managing & Using MySQL)

16.2. String Data Types (Managing & Using MySQL)

19.1. Data Types (Managing & Using MySQL)

example of: 3.4.2. Character Types (Managing & Using MySQL)

storage space required by: 3.4.2. Character Types (Managing & Using MySQL)

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

displaying PHP values in human-readable form: 4.2.4. print_r( ) and var_dump( ) (Programming PHP)

variable argument list, processing: 14.7.3. An Example with Variable Argument List (Programming PHP)

variable functions: 3.6. Variable Functions (Programming PHP)

variable-length data type: 3.4.2. Character Types (Managing & Using MySQL)

variable storage address: 14.1.5. Getting Information (Running Linux)

variables: 2.2.6. Objects (Programming PHP)

2.3. Variables (Programming PHP)

Apache::Status configuration: 21.9.1.2. Extended configuration (Practical mod_perl)

assigning values to: 2.4.12.1. Assignment (Programming PHP)

automatic initialization of: 11.1. Introducing PHP (Managing & Using MySQL)

security risks with: 11.4. Securing User Data (Managing & Using MySQL)

case-sensitivity in names: 2.1.1. Case Sensitivity (Programming PHP)

checking value with isset( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i) (Programming PHP)

checking values with isset( ) function: 2.3.4. Garbage Collection (Programming PHP)

configuration, getting: A.2b. Alphabetical Listing of PHP Functions (f-i) (Programming PHP)

configuration, options for defining: 6.8.2.4.1. Writing configuration files (Practical mod_perl)

converting HTML field names to: 7.4.2. Parameters (Programming PHP)

converting to/from arrays: 5.6. Converting Between Arrays and Variables (Programming PHP)

creating for extensions: 14.11. Creating Variables (Programming PHP)

declaring: 6.4.3. Global Variable Persistence (Practical mod_perl)

defined, getting: A.2b. Alphabetical Listing of PHP Functions (f-i) (Programming PHP)

EGPCS (environment, GET, POST, cookie and server): 7.2. Variables (Programming PHP)

12.1.2. Set variables_order (Programming PHP)

EGPCS (environment, GET, POST, cookies and server): 7.2. Variables (Programming PHP)

environment: 16.3. Setting Environment Variables (Apache: The Definitive Guide)

access control: 5.9. Order, Allow, and Deny (Apache: The Definitive Guide)

accessing with mod_cgi: 1.1.3. Apache CGI Handling with mod_cgi (Practical mod_perl)

directives for setting: 4.2.10. PerlSetEnv and PerlPassEnv (Practical mod_perl)

maintaining during redirection: A.4. Redirecting While Maintaining Environment Variables (Practical mod_perl)

expanding in double-quoted strings: 2.2.3. Strings (Programming PHP)

function parameters: 2.3.3.4. Function parameters (Programming PHP)

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

GATEWAY_INTERFACE: 1.1.3. Apache CGI Handling with mod_cgi (Practical mod_perl)

gawk scripting language: 13.3. gawk System Variables (Linux in a Nutshell)

usage in: 13.1. Command-Line Syntax (Linux in a Nutshell)

global: 1.3.1. Running CGI Scripts with mod_perl (Practical mod_perl)

declaring: 1.3.1. Running CGI Scripts with mod_perl (Practical mod_perl)

form data and, security issues: 12.1. Global Variables and Form Data (Programming PHP)

internal PHP, accessing from extension functions: 14.10. Global Variables (Programming PHP)

persistence: 6.4.3. Global Variable Persistence (Practical mod_perl)

SAPI (Server Abstraction API): 14.10.1. SAPI Globals (SG) (Programming PHP)

global, mod_perl: 17.5. Global Variables (Apache: The Definitive Guide)

HTTP_USER_AGENT: 1.1.3. Apache CGI Handling with mod_cgi (Practical mod_perl)

%INC: 6.3.2. The %INC Hash (Practical mod_perl)

initializing: 6.4.3. Global Variable Persistence (Practical mod_perl)

interpolating into strings: 4.1.1. Variable Interpolation (Programming PHP)

lexical

changing to global: 6.2.1. The First Mystery: Why Does the Script Go Beyond 5? (Practical mod_perl)

closures and: 6.2.1. The First Mystery: Why Does the Script Go Beyond 5? (Practical mod_perl)

mapping names to value positions in memory: 2.3.4. Garbage Collection (Programming PHP)

memory usage: 10.1.2. Memory-Sharing Validation (Practical mod_perl)

MOD_PERL_TRACE: 21.4. Tracing mod_perl-Specific Perl Calls (Practical mod_perl)

names, $ (dollar sign) in: 2.1.6.1. Variable names (Programming PHP)

NULL value: 2.2.8. NULL (Programming PHP)

numerical access: 10.1.2.2. Numerical versus string access to variables (Practical mod_perl)

object references: 6.2. Creating an Object (Programming PHP)

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

passing

@_array: 14.2.5. Passing Variables (Practical mod_perl)

by value: 14.2.5. Passing Variables (Practical mod_perl)

to subroutines: 14.2.5. Passing Variables (Practical mod_perl)

passing as arguments: 6.2.1. The First Mystery: Why Does the Script Go Beyond 5? (Practical mod_perl)

passing by reference: 3.4.2. Passing Parameters by Reference (Programming PHP)

passing by value: 3.4.1. Passing Parameters by Value (Programming PHP)

PERLDB_OPTS: 6.2.1. The First Mystery: Why Does the Script Go Beyond 5? (Practical mod_perl)

PERL5LIB, modifying for nonstandard directories: 3.9.2.2. Using the PERL5LIB environment variable (Practical mod_perl)

$PHP_SELF: 7.2. Variables (Programming PHP)

PIDs and: 9.3. Process Memory Measurements (Practical mod_perl)

printing: 14. Server-Side Includes (Apache: The Definitive Guide)

14.5. Echo (Apache: The Definitive Guide)

property names, using with: 6.3. Accessing Properties and Methods (Programming PHP)

QUERY_STRING: 1.1.3. Apache CGI Handling with mod_cgi (Practical mod_perl)

$": 21.5.6. Introduction to the Perl Debugger (Practical mod_perl)

references to variable stored in another variable: 2.3.1. Variable Variables (Programming PHP)

REMOTE_ADDR: 1.1.3. Apache CGI Handling with mod_cgi (Practical mod_perl)

removing value with unset( ) function: 2.3.4. Garbage Collection (Programming PHP)

request, importing into global scope: A.2b. Alphabetical Listing of PHP Functions (f-i) (Programming PHP)

REQUEST_METHOD: 1.1.3. Apache CGI Handling with mod_cgi (Practical mod_perl)

scalar, redirecting STDOUT: 6.4.5. Redirecting STDOUT into a Scalar Variable (Practical mod_perl)

scope of: 2.3.3. Variable Scope (Programming PHP)

3.3. Variable Scope (Programming PHP)

SCRIPT_FILENAME: 1.1.3. Apache CGI Handling with mod_cgi (Practical mod_perl)

SCRIPT_NAME: 1.1.3. Apache CGI Handling with mod_cgi (Practical mod_perl)

SERVER_ADDR: 1.1.3. Apache CGI Handling with mod_cgi (Practical mod_perl)

SERVER_PROTOCOL: 1.1.3. Apache CGI Handling with mod_cgi (Practical mod_perl)

SERVER_SOFTWARE: 1.1.3. Apache CGI Handling with mod_cgi (Practical mod_perl)

session, registering: 7.6.2. Sessions (Programming PHP)

7.6.2.1. Session basics (Programming PHP)

setting value of: 2.3. Variables (Programming PHP)

sharing, regular expressions and: 10.1.2.1. Variable unsharing caused by regular expressions (Practical mod_perl)

static: 2.3.3.3. Static variables (Programming PHP)

3.3.2. Static Variables (Programming PHP)

string access: 10.1.2.2. Numerical versus string access to variables (Practical mod_perl)

syslog, defining: A.2a. Alphabetical Listing of PHP Functions (a-e) (Programming PHP)

$^T: 6.5.1. $^T and time( ) (Practical mod_perl)

Template Toolkit language: D.4. Template Toolkit Language (Practical mod_perl)

global: D.4.1. Simple Template Example (Practical mod_perl)

this: 6.4.1. Declaring Methods (Programming PHP)

variable, using with objects: 6.2. Creating an Object (Programming PHP)

$^W: 6.5.2.1. Warnings (Practical mod_perl)

21.1.1. The Importance of Warnings (Practical mod_perl)

$x: 14.2.1. Memory Reuse (Practical mod_perl)

variables_order directive in php.ini: 12.1.2. Set variables_order (Programming PHP)

VARIANT type: 15.3.2. PHP Functions (Programming PHP)

var/log/lastlog file: 8.3. Managing System Logs (Running Linux)

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

var/log/wtmp file: 8.3. Managing System Logs (Running Linux)

vars pragma, global variables and: 6.2.1. The First Mystery: Why Does the Script Go Beyond 5? (Practical mod_perl)

var/spool directory: 4.16. Important Directories (Running Linux)

8.4.5.3. The rest of the printcap variables (Running Linux)

8.4.10.1. Setting up printer directories (Running Linux)

var/spool/cron/crontabs directory: 8.2. Scheduling Jobs Using cron (Running Linux)

var/spool/lpd directory: 9.6. Printing (Running Linux)

Vary header: 16.3.1. The Vary Header (Practical mod_perl)

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

VBScript, converting to PHP COM function calls: 15.3.2. PHP Functions (Programming PHP)

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

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

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

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

Verisign Payflow Pro extension: B.1. Optional Extensions Listing (Programming PHP)

version

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

of XML in processing instruction: 11.1. Lightning Guide to XML (Programming PHP)

version command

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

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

version control: 14. RCS (Linux in a Nutshell)

15. CVS (Linux in a Nutshell)

(see also RCS; CVS)

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

version numbers: 7.4. Building a New Kernel (Running Linux)

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

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

versioning, modules: B.1.2. Apache::PerlVINC—Allow Module Versioning in <Location> and <VirtualHost> blocks (Practical mod_perl)

versions

Apache: 0. Preface (Apache: The Definitive Guide)

1.8. Which Apache? (Apache: The Definitive Guide)

early version descriptions: 1.2. A Brief History of Linux (Running Linux)

HTTP, forcing to 1.0: 16.9. Browsers (Apache: The Definitive Guide)

Linux, researching: 7.2. Upgrading Software (Running Linux)

modules and building kernel: 7.4.2. Building the Kernel (Running Linux)

of MySQL, installing: 2.1. Preparation (Managing & Using MySQL)

numbering system: 1.4.1. A Note on Linux Version Numbers (Running Linux)

SOCKS: 1.10.5. Configuration Settings and Rules (Apache: The Definitive Guide)

Unix: 1.6.3. Which Unix? (Apache: The Definitive Guide)

VFAT filesystems/partitions, mounting: 12.2. Sharing Partitions (Running Linux)

vga= (boot time option): 5.2.2.3. Specifying boot time options (Running Linux)

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

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

11. The vi Editor (Linux in a Nutshell)

address symbols: 11.13.3. Address Symbols (Linux in a Nutshell)

bindings, compared to Emacs bindings: 8.7.5. Command-Line Editing (Linux in a Nutshell)

clones: 9.1. Editing Files Using vi (Running Linux)

command-line editing mode (bash): 7.2.3. Command-Line Editing (Linux in a Nutshell)

7.2.3. Command-Line Editing (Linux in a Nutshell)

command-line options: 11.2. vi Command-Line Options (Linux in a Nutshell)

command mode: 11.1.1. Command Mode (Linux in a Nutshell)

alphabetical key list: 11.12. Alphabetical List of Keys in Command Mode (Linux in a Nutshell)

command syntax: 11.1.3. Syntax of vi Commands (Linux in a Nutshell)

configuration: 11.15. vi Configuration (Linux in a Nutshell)

~/.exrc file: 11. The vi Editor (Linux in a Nutshell)

11.15.1. The :set Command (Linux in a Nutshell)

edit commands: 11.5. Edit Commands (Linux in a Nutshell)

changing text: 11.5.2. Changing and Deleting Text (Linux in a Nutshell)

deleting text: 11.5.2. Changing and Deleting Text (Linux in a Nutshell)

exiting: 11.6. Saving and Exiting (Linux in a Nutshell)

multiple files: 11.7. Accessing Multiple Files (Linux in a Nutshell)

saving: 11.6. Saving and Exiting (Linux in a Nutshell)

text insertion: 11.5.1. Inserting New Text (Linux in a Nutshell)

editing operators: 11.1.3. Syntax of vi Commands (Linux in a Nutshell)

enhanced versions: 11. The vi Editor (Linux in a Nutshell)

ex (see ex editor)

extending: 9.1.12. Extending vi (Running Linux)

files, opening: 11.2. vi Command-Line Options (Linux in a Nutshell)

insert mode: 11.1.2. Insert Mode (Linux in a Nutshell)

launching: 9.1.1. Starting vi (Running Linux)

line numbering: 11.4.5.1. Line numbering (Linux in a Nutshell)

macros: 11.10. Macros (Linux in a Nutshell)

marking position: 11.4.5.2. Marking position (Linux in a Nutshell)

miscellaneous commands: 11.11. Miscellaneous Commands (Linux in a Nutshell)

movement commands: 11.4. Movement Commands (Linux in a Nutshell)

character: 11.4.1. Character (Linux in a Nutshell)

lines: 11.4.3. Lines (Linux in a Nutshell)

screens: 11.4.4. Screens (Linux in a Nutshell)

text: 11.4.2. Text (Linux in a Nutshell)

operating modes: 11. The vi Editor (Linux in a Nutshell)

overview: 9.1. Editing Files Using vi (Running Linux)

searching: 11.4.5. Searches (Linux in a Nutshell)

:set command (ex): 11.15.1. The :set Command (Linux in a Nutshell)

shell, interacting with: 11.9. Interacting with the Shell (Linux in a Nutshell)

starting a session: 11.2. vi Command-Line Options (Linux in a Nutshell)

status-line commands: 11.1.4. Status-Line Commands (Linux in a Nutshell)

tcsh command-line editing mode: 8.7.5.2. vi mode (Linux in a Nutshell)

user-defined commands, characters for: 11.10. Macros (Linux in a Nutshell)

window commands: 11.8. Window Commands (Linux in a Nutshell)

video cards: 10.2. Hardware Requirements (Running Linux)

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

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

View layer (MVC methodology): 9.2.2. The Model/View/Controller Methodology (Managing & Using MySQL)

vile text editor: 11. The vi Editor (Linux in a Nutshell)

vim command (see vi editor)

vim editor: 11. The vi Editor (Linux in a Nutshell)

virtual attribute (include command): 14.4. Execute CGI (Apache: The Definitive Guide)

virtual cash: 11.2. Binary Signatures, Virtual Cash (Apache: The Definitive Guide)

virtual console support: 1.4.2. A Bag of Features (Running Linux)

virtual consoles: 4.3. Virtual Consoles (Running Linux)

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

number of, determining: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

setterm utility: 8.5. Setting Terminal Attributes (Running Linux)

virtual devices, linking to actual devices: 8.4.11. Exercising the Printer Daemon (Running Linux)

virtual documents: 4.2.1. Alias Configurations (Practical mod_perl)

virtual hosts: 3.1. More and Better Web Sites: site.simple (Apache: The Definitive Guide)

4.2. Virtual Hosts (Apache: The Definitive Guide)

4.3. Two Copies of Apache (Apache: The Definitive Guide)

(see also multiple copies of Apache)

configuration: 12.10.2. Dual-Server Virtual Host Configuration (Practical mod_perl)

main server interaction and: 12.10.3. Virtual Hosts and Main Server Interaction (Practical mod_perl)

name-based, configuring

backend server: 12.10.5. Backend Server Configuration (Practical mod_perl)

frontend server: 12.10.4. Frontend Server Configuration (Practical mod_perl)

proxying backend server: 12.10.1. Virtual Host Flavors (Practical mod_perl)

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

virtual machines, users: C.4. Giving Each User a Virtual Machine (Practical mod_perl)

virtual memory: 5.11.2. Swapping Prevention (Practical mod_perl)

virtual memory, support for: 1.4.3. Kernel (Running Linux)

virtual servers, running single script on multiple servers: 4.9.2. Running the Same Script from Different Virtual Hosts (Practical mod_perl)

virtual terminals, switching between: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

<VirtualHost> directive: 3.3. Block Directives (Apache: The Definitive Guide)

4.2.1. Name-Based Virtual Hosts (Apache: The Definitive Guide)

viruses: 7.3.3. Upgrading Other Software (Running Linux)

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

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

VISUAL environment variable

bash: 7.5.1. Line-Edit Mode (Linux in a Nutshell)

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

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

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

VMware: 12.3. Running MS-DOS and Windows Applications on Linux (Running Linux)

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

vpopmail extension: B.1. Optional Extensions Listing (Programming PHP)

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

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

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

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