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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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