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Index: H

H command (sed): 12.4. Alphabetical Summary of sed Commands (Linux in a Nutshell)

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

suitability of Linux: 1.3. Who's Using Linux? (Running Linux)
support: 7.4.2. Building the Kernel (Running Linux)

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

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

handheld, as media type: E.6. Putting Everything Together (Practical mod_perl)

handler( ) subroutine: 4.2.5. The handler( ) Subroutine (Practical mod_perl)

handler_rec structure: 21.3. The Module Structure (Apache: The Definitive Guide)

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

ALRM signal: 6.10. Handling Server Timeout Cases and Working with $SIG{ALRM} (Practical mod_perl)

Apache: 6.1. MIME Types (Apache: The Definitive Guide)

16.7. Handlers (Apache: The Definitive Guide)

callbacks: 3.1.2. Activating Callback Hooks (Practical mod_perl)

converting mod_cgi script to: 6.7.2. Converting into a Perl Content Handler (Practical mod_perl)
converting to use mod_perl API: 6.7.3. Converting to use the mod_perl API and mod_perl-Specific Modules (Practical mod_perl)

creating: 2.7. A Simple mod_perl Content Handler (Practical mod_perl)

custom, performance compared to Apache::Registry: 13.1. Apache::Registry PerlHandler Versus Custom PerlHandler (Practical mod_perl)

disabling code on live servers and: 5.8.3.2. Disabling code running under other handlers (Practical mod_perl)

input arguments, processing: 13.2. Apache::args Versus Apache::Request::param Versus CGI::param (Practical mod_perl)

JServ status handler: 18.1.4. JServ Status (Apache: The Definitive Guide)

method: 25.1.5. Method Handlers (Practical mod_perl)

coding considerations: 6.12. Method Handlers: The Browse and See, Browse and View Example (Practical mod_perl)
enabling: 3.1.4. Enabling Extra Features (Practical mod_perl)

method handlers: 4.2.8. Perl Method Handlers (Practical mod_perl)

perl-script handler: 24.5.5.2. perl-script (Practical mod_perl)
response handler example: 24.5.5.3. A simple response handler example (Practical mod_perl)

modperl handler: 24.5.5.1. modperl (Practical mod_perl)

modules and: 21.1. Overview (Apache: The Definitive Guide)

Perl: 1.4.2. mod_perl 1.0 and the mod_perl API (Practical mod_perl)

post-processing, terminating child processes: 6.4.1. exit( ) (Practical mod_perl)

signal, trapping errors: 21.1.4. Displaying Errors to Users (Practical mod_perl)

enabled: 3.1.4. Enabling Extra Features (Practical mod_perl)
executing directives: 4.2.7. Stacked Handlers (Practical mod_perl)

testing: 2.7. A Simple mod_perl Content Handler (Practical mod_perl)

upgrading on live servers: 5.8.2.2.6. Moving files and restarting the server (Practical mod_perl)

handles, databases, singleton database handles: A.12. Singleton Database Handles (Practical mod_perl)

handling exceptions, XSP: E.3.4. Handling Exceptions (Practical mod_perl)

handshaking (PPP): 15.2.1.3. Setting up PPP (Running Linux)

hanging processes

debugging, OS problems: 21.7.1. Hanging Because of an Operating System Problem (Practical mod_perl)

detecting: 21.7.3. Detecting Hanging Processes (Practical mod_perl)

interactive debugger: 21.7.4.3. Using the interactive debugger (Practical mod_perl)
Perl trace: 21.7.4.1. Using the Perl trace (Practical mod_perl)
system calls trace: 21.7.4.2. Using the system calls trace (Practical mod_perl)

reasons for: 21.7.2. When a Process Might Hang (Practical mod_perl)

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

hangman application, Template Toolkit: D.8. Hangman Application (Practical mod_perl)

CGI script: D.8.1. Hangman CGI Script (Practical mod_perl)
modular templates: D.8.2. Hangman with Modular Templates (Practical mod_perl)
plug-in module conversion: D.8.3. Hangman Plug-in (Practical mod_perl)
self-contained template: D.8.4. Self-Contained Hangman Template (Practical mod_perl)

devices, designation as: 4.1. The Boot Process (Linux in a Nutshell)

naming conventions: 4.1. The Boot Process (Linux in a Nutshell)

under GRUB: 4.3. GRUB: The Grand Unified Bootloader (Linux in a Nutshell)

parameters, setting (hdparm): 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

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

boot options: 3.1.1. Booting Linux (Running Linux)

detecting, troubleshooting: 3.3.2.2. Problems recognizing hard drive or controller (Running Linux)

overview: 2.2.2. Repartitioning Concepts (Running Linux)

2.2.2. Repartitioning Concepts (Running Linux)

requirements: 2.2.3. Linux Partition Requirements (Running Linux)

resizing: 2.2.4. Repartitioning Your Drives (Running Linux)

preparing for Linux installation: 2.2.1. Installation Overview (Running Linux)

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

Alpha systems: B.3.3. Preparing Hardware for Installation (Running Linux)

requirements: B.1.4. Minimum Hardware (Running Linux)
resources on: B.1.2. Chipsets (Running Linux)

boot options: 3.1.1. Booting Linux (Running Linux)

bottleneck detection: 8.2.7. Detecting and Avoiding Bottlenecks (Practical mod_perl)

conflicts, solving: 8.2.8. Solving Hardware Requirement Conflicts (Practical mod_perl)

detecting during Linux installation: 3.1.1. Booting Linux (Running Linux)

device naming: 3.1.2. Drives and Partitions Under Linux (Running Linux)

fault-tolerant CPU: 8.2.6. Getting a Fault-Tolerant CPU (Practical mod_perl)

fax devices: 8.4.4. Checking Print Utilities (Running Linux)

hard drives, preparing for Linux installation: 2.2.1. Installation Overview (Running Linux)

Internet connection: 8.2.3. Getting a Fast Internet Connection (Practical mod_perl)

interrupt handlers and kernel: 1.4.3. Kernel (Running Linux)

I/O addresses, checking: 5.6. The /proc Filesystem (Running Linux)

I/O performance tuning: 8.2.4. Tuning I/O Performance (Practical mod_perl)

ISDN, configuring: 15.3.1. Configuring Your ISDN Hardware (Running Linux)

memory, needs assessment: 8.2.5. How Much Memory Is Enough? (Practical mod_perl)

performance tuning for: 5.4. Operating System/Hardware Tuning (Managing & Using MySQL)

printers: 8.4.1. Checking Printer Hardware (Running Linux)

optimization: 8.4.13. Printer Optimization (Running Linux)

security for: 6.2.2. Hardware Security (Managing & Using MySQL)

selecting: 8.2. Choosing the Right Hardware (Practical mod_perl)

site traffic and: 8.2.1. Machine Strength Demands According to Expected Site Traffic (Practical mod_perl)

strong machine versus many weak ones: 8.2.2. A Single Strong Machine Versus Many Weaker Machines (Practical mod_perl)

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

tape drives, making backups: 8.1.1.1. Backing up to tape (Running Linux)

TCP/IP requirements: 15.1.2. Hardware Requirements (Running Linux)

troubleshooting: 3.3.2. Hardware Problems (Running Linux)

X Window System requirements: 10.2. Hardware Requirements (Running Linux)

has( ) (Cache class): 9.3.2.9. The Cache class (Managing & Using MySQL)

# for comments: 1.10.2. Semimanual Build Method (Apache: The Definitive Guide)

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

HASH access method, DBM: 19. DBM and mod_perl (Practical mod_perl)

hash bang (#!): 7.7. Built-in Commands (Linux in a Nutshell)

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

bash: 7.7. Built-in Commands (Linux in a Nutshell)
ftp: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

hash mark (#): 4.3.2. The GRUB Configuration File (Linux in a Nutshell)

6.3. Common Features (Linux in a Nutshell)
13.2.2. Some Syntax Rules (Running Linux)
in comments: 2.1.4.1. Shell-style comments (Programming PHP)
in shell scripts: 7.7. Built-in Commands (Linux in a Nutshell)
root account prompt: 5.1. Maintaining the System (Running Linux)
sed: 12.4. Alphabetical Summary of sed Commands (Linux in a Nutshell)
tcsh shell: 8.9. Built-in Commands (Linux in a Nutshell)

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

HAVING clause: 3.7.4. Limiting Results (Managing & Using MySQL)

15.2. SQL Commands (Managing & Using MySQL)

hd= boot option: 3.1.1. Booting Linux (Running Linux)

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

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

HEAD method (HTTP): 13.1.1. A Closer Look at HTTP (Apache: The Definitive Guide)

HEAD requests: 16.4.3. HEAD Requests (Practical mod_perl)

header( ): 11.5. Managing Sessions (Managing & Using MySQL)

11.6. Writing Data with PHP (Managing & Using MySQL)

6.11. Generating Correct HTTP Headers (Practical mod_perl)

7.5. Setting Response Headers (Programming PHP)
A.2b. Alphabetical Listing of PHP Functions (f-i) (Programming PHP)

header files, APACHE_HEADER_INSTALL configuration parameter: 3.1.1. Controlling the Build Process (Practical mod_perl)

Header keyword (RCS): 14.3.1.1. Keywords (Linux in a Nutshell)

header parsing (Apache request processing): 1.4. Apache 1.3 Request Processing Phases (Practical mod_perl)

header template, Template Toolkit: D.4.1. Simple Template Example (Practical mod_perl)

HeaderName directive: 3.5. HTTP Response Headers (Apache: The Definitive Guide)

7.1. Making Better Indexes in Apache (Apache: The Definitive Guide)

Accept-Language: 16.3. Content Negotiation (Practical mod_perl)

C source files, creating: 13.12.1. Building Perl Extensions with XS and h2xs (Practical mod_perl)

composition: 16. HTTP Headers for Optimal Performance (Practical mod_perl)

content-length header: 16.2.2. Content-Length Header (Practical mod_perl)
content-type header: 16.2.1. Content-Type Header (Practical mod_perl)

content headers, entity tags: 16.2.3. Entity Tags (Practical mod_perl)

content negotiation: 16.3. Content Negotiation (Practical mod_perl)

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

Content-type: 1.1.2. The Common Gateway Interface Specification (Practical mod_perl)

cache-control header: 16.1.3. Expires and Cache-Control Headers (Practical mod_perl)
date header: 16.1.1. Date Header (Practical mod_perl)
Expires header: 16.1.3. Expires and Cache-Control Headers (Practical mod_perl)
last-modified: 16.1.2. Last-Modified Header (Practical mod_perl)

declining: 16.5. Avoiding Dealing with Headers (Practical mod_perl)

HTTP: 1.1.1. The HTTP Protocol (Practical mod_perl)

HTTP, generating: 6.11. Generating Correct HTTP Headers (Practical mod_perl)

HTTP response: 3.5. HTTP Response Headers (Apache: The Definitive Guide)

MIME, generating: 1.1.2. The Common Gateway Interface Specification (Practical mod_perl)

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

headers, HTTP: 7.1. HTTP Basics (Programming PHP)

authentication: 7.5.4. Authentication (Programming PHP)

Content-Type for image formats: 9.4.1. The Structure of a Graphics Program (Programming PHP)

request, entries in $_SERVER array: 7.3. Server Information (Programming PHP)

response: 7.5. Setting Response Headers (Programming PHP)

Content-Type: 7.5.1. Different Content Types (Programming PHP)
Cookie: 7.6.1. Cookies (Programming PHP)
Expires: 7.5.3. Expiration (Programming PHP)
Location header: 7.5.2. Redirections (Programming PHP)

headers, Texinfo: 9.3.5.1. Writing the Texinfo source (Running Linux)

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

HEAP table type: 15.2. SQL Commands (Managing & Using MySQL)

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

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

hello user script: 1.1.2. The Common Gateway Interface Specification (Practical mod_perl)

Hello World PDF document (example): 10.2.1. A Simple Example (Programming PHP)

hello world script: 1.1.2. The Common Gateway Interface Specification (Practical mod_perl)

help: 0.1. Why People Like Linux (Running Linux)

Emacs: 9.2.3. Tutorial and Online Help (Running Linux)

Emacs, invoking in: 10.2. Typical Problems (Linux in a Nutshell)

10.4.16. Detail Information Help Commands (Linux in a Nutshell)

man pages: 4.12. Manual Pages (Running Linux)

online: 3.2.2. Getting Online Help (Running Linux)

options: 3.9.4. Making a Local Apache Installation (Practical mod_perl)

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

sources of: 1.9. Getting Help (Running Linux)

bash: 7.7. Built-in Commands (Linux in a Nutshell)
CVS: 15.6.7. User Commands (Linux in a Nutshell)
ex: 11.14. Alphabetical Summary of ex Commands (Linux in a Nutshell)
ftp: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)
GRUB: 4.4.2. Command-Line and Menu Entry Commands (Linux in a Nutshell)
lpc utility: 8.4.12. Controlling Printer Services with lpc (Running Linux)

help flag (apachect1): 2.3. Setting Up a Unix Server (Apache: The Definitive Guide)

helper classes: 9.3.2. Implementing the Model (Managing & Using MySQL)

--helpoption: 3.9.4. Making a Local Apache Installation (Practical mod_perl)

here documents (heredocs): 4.1.4. Here Documents (Programming PHP)

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

hexadecimal literals (SQL): 15.1.1. Literals (Managing & Using MySQL)

hexadecimal values: 2.2.1. Integers (Programming PHP)

formatting for printf( ): 4.2.3.2. Type specifiers (Programming PHP)

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

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

hidden files: 4.4.2. Listing Files (Running Linux)

hidden form fields: 7.6. Maintaining State (Programming PHP)

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

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)

High-Availability Linux Project web site: 5.12. References (Practical mod_perl)

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

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

HiSax driver (ISDN): 15.3.1. Configuring Your ISDN Hardware (Running Linux)

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

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

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

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

CGI: 1.1. A Brief History of CGI (Practical mod_perl)
development of mod_perl 1.0: 1.3. The Development of mod_perl 1.0 (Practical mod_perl)

history command

bash: 7.7. Built-in Commands (Linux in a Nutshell)
CVS: 15.6.7. User Commands (Linux in a Nutshell)
tcsh: 8.9. Built-in Commands (Linux in a Nutshell)

history of Apache: 0.1. Who Wrote Apache, and Why? (Apache: The Definitive Guide)

history of Linux: 0. Preface (Running Linux)

1.2. A Brief History of Linux (Running Linux)

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

home directory and backups: 8.1.1. Simple Backups (Running Linux)

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

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

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

$HOME/Library/StartupItems directory: 4.2.2. Mac OS X (Managing & Using MySQL)

$HOME/.my.cnf file: 4.1.1. File Locations (Managing & Using MySQL)

[homes] section (smb.conf file): 12.2.2.2. Configuring Samba (Running Linux)

hooks: 20.8. Hooks, Optional Hooks, and Optional Functions (Apache: The Definitive Guide)

arguments: 20.8.1. Hooks (Apache: The Definitive Guide)

defining: 20.8. Hooks, Optional Hooks, and Optional Functions (Apache: The Definitive Guide)

exporting: 20.8. Hooks, Optional Hooks, and Optional Functions (Apache: The Definitive Guide)

optional functions: 20.8.4. Optional Functions (Apache: The Definitive Guide)
registering: 20.8.1. Hooks (Apache: The Definitive Guide)

implementation: 20.8.1. Hooks (Apache: The Definitive Guide)

optional hooks: 20.8.2. Optional Hooks (Apache: The Definitive Guide)

example: 20.8.3. Optional Hook Example (Apache: The Definitive Guide)

parts: 20.8.1. Hooks (Apache: The Definitive Guide)

structures: 20.8.1. Hooks (Apache: The Definitive Guide)

20.8.1. Hooks (Apache: The Definitive Guide)

typesafety: 20.8. Hooks, Optional Hooks, and Optional Functions (Apache: The Definitive Guide)

values, returning: 20.8.1. Hooks (Apache: The Definitive Guide)

host address: 15.1.1. TCP/IP Concepts (Running Linux)

host application tuning: 5.2.1. Host Application Tuning (Managing & Using MySQL)

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

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

host names, specifying: 6.1.2.1. GRANT and REVOKE (Managing & Using MySQL)

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

host 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)

hostconfig file (Mac OS X): 4.2.2. Mac OS X (Managing & Using MySQL)

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

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

15.1.3.7. Setting your hostname (Running Linux)

hostname.err file: 4.3.1. The Error Log (Managing & Using MySQL)

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

"cannot determine local hostname": 2.3.3. Running Apache Under Unix (Apache: The Definitive Guide)
controlling access: 5.9. Order, Allow, and Deny (Apache: The Definitive Guide)
mapping several to one address: 3.4. Other Directives (Apache: The Definitive Guide)
providing (see ServerName directive)
resolving, host.conf file: 15.1.3.5. /etc/host.conf (Running Linux)
reverse-DNS lookup: 3.4. Other Directives (Apache: The Definitive Guide)
setting: 15.1.3.7. Setting your hostname (Running Linux)

hostnames, returning with IP address: A.2b. Alphabetical Listing of PHP Functions (f-i) (Programming PHP)

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

host numbers: 1.3.1. What to Know About TCP/IP (Apache: The Definitive Guide)
hostnames: 1.3.3.1. Multiple sites: Unix (Apache: The Definitive Guide)
nonrouting (bastion): 11.4.2. Separate Networks (Apache: The Definitive Guide)
virtual (see virtual hosts)

hosts file: 2.3.6. A Local Network (Apache: The Definitive Guide)

15.1.3.3. /etc/hosts (Running Linux)

hosts.conf file: 15.1.3.5. /etc/host.conf (Running Linux)

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

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

HOWTO (Linux Distribution): 2.1. Distributions of Linux (Running Linux)

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

.htaccess file: 3.7. .htaccess (Apache: The Definitive Guide)

5.15. Using .htaccess Files (Apache: The Definitive Guide)
7.2.1. DirectoryIndex (Apache: The Definitive Guide)

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

htdigest utility: 5.11. Digest Authentication (Apache: The Definitive Guide)

htdocs directory: 1.2. How Apache Works (Apache: The Definitive Guide)

2.1. What's Behind an Apache Web Site? (Apache: The Definitive Guide)

blocks inside PHP statements: 2.5.1. if (Programming PHP)

client-side scripting within pages: 2.7.4. Script Style (Programming PHP)

color options for pages: 7.6.1. Cookies (Programming PHP)

embedded PHP commands in pages: 1.4. A Walk Through PHP (Programming PHP)

embedding images in pages: 9.1. Embedding an Image in a Page (Programming PHP)

extracting URLs from pages: 4.10.13.1. Matching (Programming PHP)

forms (see forms)

in PHP functions: 3.2. Defining a Function (Programming PHP)

in strings, converting special characters to entities: 4.5.1. HTML (Programming PHP)

loading from another module: 2.6. Including Code (Programming PHP)

PHP configuration page: 1.4.1. Configuration Page (Programming PHP)

meta, extracting from strings: 4.5.1.4. Extracting meta tags (Programming PHP)

A.2b. Alphabetical Listing of PHP Functions (f-i) (Programming PHP)

removing from strings: 4.5.1.3. Removing HTML tags (Programming PHP)

tags, removing from strings: A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

transforming XML documents into

XSL stylesheets: 11.4. Transforming XML with XSLT (Programming PHP)

B.1. Optional Extensions Listing (Programming PHP)

XSL transformation from files: 11.4. Transforming XML with XSLT (Programming PHP)

XSL transformation from variables: 11.4. Transforming XML with XSLT (Programming PHP)

translation tables for entities: 4.5.1.2. Entity-quoting only HTML syntax characters (Programming PHP)

A.2b. Alphabetical Listing of PHP Functions (f-i) (Programming PHP)

HTML documents, embedding PHP scripts in: 11.1. Introducing PHP (Managing & Using MySQL)

HTML forms, GET and POST methods: 1.1.2. The Common Gateway Interface Specification (Practical mod_perl)

HTML (Hypertext Markup Language)

forms: 13.1.2. Creating a Form (Apache: The Definitive Guide)
imagemaps: 7.3.1. HTML File (Apache: The Definitive Guide)

HTML <form> environment, using: 11.1. Introducing PHP (Managing & Using MySQL)

11.7. Using the HTML <form> Environment (Managing & Using MySQL)

<html> tags, printing: 13.3. Buffered Printing and Better print( ) Techniques (Practical mod_perl)

htmlentities( ): 4.5.1.1. Entity-quoting all special characters (Programming PHP)

A.2b. Alphabetical Listing of PHP Functions (f-i) (Programming PHP)
translation table for quote style: 4.5.1.2. Entity-quoting only HTML syntax characters (Programming PHP)

htmlentities( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i) (Programming PHP)

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

A.2b. Alphabetical Listing of PHP Functions (f-i) (Programming PHP)
translation table for quote style: 4.5.1.2. Entity-quoting only HTML syntax characters (Programming PHP)

htmlspecialchars( ) function: 4.5.1.1. Entity-quoting all special characters (Programming PHP)

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

htpasswd utility: 5.3. Passwords Under Unix (Apache: The Definitive Guide)

httd.h: 21.1. Overview (Apache: The Definitive Guide)

ht_time( ): A.6.10. Time and Date Functions (Apache: The Definitive Guide)

HTTP: 7.1. HTTP Basics (Programming PHP)

environment information: 15.2.3. The Environment (Programming PHP)

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

headers (see headers, HTTP)

methods, GET and POST: 7.1. HTTP Basics (Programming PHP)

7.1. HTTP Basics (Programming PHP)
in form processing: 7.4.1. Methods (Programming PHP)
sending XML-RPC request via POST: 11.5.1. Servers (Programming PHP)

request headers, entries in $_SERVER array: 7.3. Server Information (Programming PHP)

response: 7.1. HTTP Basics (Programming PHP)

9.4.1. The Structure of a Graphics Program (Programming PHP)

HTTP headers, generating: 6.11. Generating Correct HTTP Headers (Practical mod_perl)

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

13.1.1. A Closer Look at HTTP (Apache: The Definitive Guide)

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

3.4. Other Directives (Apache: The Definitive Guide)

response headers: 3.5. HTTP Response Headers (Apache: The Definitive Guide)

status codes: 10.2.1. site.authent — Another Example (Apache: The Definitive Guide)

21.2. Status Codes (Apache: The Definitive Guide)

using Version 1.0: 16.9. Browsers (Apache: The Definitive Guide)

Version 1.1 and browsers: 6.5. Browsers and HTTP 1.1 (Apache: The Definitive Guide)

HTTP request filters, I/O filtering: 25.3.1.2. HTTP request versus connection filters (Practical mod_perl)

HTTP request output filter: 25.3.4.3. Bucket brigade-based HTTP request output filter (Practical mod_perl)

HTTP request phases, mod_perl 2.0: 25.2.3. HTTP Request Phases (Practical mod_perl)

GET requests: 16.4.1. GET Requests (Practical mod_perl)

conditional: 16.4.2. Conditional GET Requests (Practical mod_perl)

HEAD requests: 16.4.3. HEAD Requests (Practical mod_perl)

POST requests: 16.4.4. POST Requests (Practical mod_perl)

16.4.4. POST Requests (Practical mod_perl)

HTTP/1.1 standard web site: 1.5. References (Practical mod_perl)

HTTP_ACCEPT variable: 6.2.2. Image Negotiation (Apache: The Definitive Guide)

HTTP_ACCEPT_LANGUAGE variable: 6.3. Language Negotiation (Apache: The Definitive Guide)

$HTTP_COOKIE_VARS array: 11.4. Securing User Data (Managing & Using MySQL)

7.2. Variables (Programming PHP)

httpd: 1.2. How Apache Works (Apache: The Definitive Guide)

1.1. A Brief History of CGI (Practical mod_perl)
building: 2.2.2. Building mod_perl (Practical mod_perl)
flags: 2.1.1. Running Apache from the Command Line (Apache: The Definitive Guide)
processes, limiting: B.3.3. Apache::SizeLimit—Limit Apache httpd Processes (Practical mod_perl)
restarting: 3.6. Restarts (Apache: The Definitive Guide)
testing: 2.2.2. Building mod_perl (Practical mod_perl)
virtual (see virtual hosts)

httpd accelerator mode (proxy servers): 12.5. Adding a Proxy Server in httpd Accelerator Mode (Practical mod_perl)

httpd daemon: 16.1.2. Configuring Your Own Web Server (Running Linux)

httpd executable, single-process mode, enabling: 21.5.9. Interactive mod_perl Debugging (Practical mod_perl)

httpd server, installation, multiple machines: 3.8. Installing mod_perl on Multiple Machines (Practical mod_perl)

httpd.conf: 4.1.1. Configuration Files (Practical mod_perl)

httpd.conf file: 11.2.1.1. Installation problems (Managing & Using MySQL)

16.1.2.1. httpd.conf (Running Linux)
configuring custom session storage: 7.6.2.3. Custom storage (Programming PHP)
configuring open_basedir: 12.2.2. Restrict Filesystem Access to a Specific Directory (Programming PHP)
configuring PHP for CGI and SAPI module: 15.1.2.4. Manually configuring Apache (Programming PHP)
configuring to place session files in your own directory: 12.4.2. Session Files (Programming PHP)
securing include files: 11.3.6. Include Files (Managing & Using MySQL)
security restrictions on PHP scripts: 12.4.4. Safe Mode (Programming PHP)
setting safe_mode: 12.4.4. Safe Mode (Programming PHP)

httpd.conf file, including users/groups: 2.3.1. webuser and webgroup (Apache: The Definitive Guide)

httpd_docs (two server approach): 12.3. One Plain and One mod_perl-Enabled Apache Server (Practical mod_perl)

building: 12.3.2.1. Building the httpd_docs server (Practical mod_perl)
configuring: 12.3.3.1. Basic httpd_docs server configuration (Practical mod_perl)

httpd_perl (two server approach): 12.3. One Plain and One mod_perl-Enabled Apache Server (Practical mod_perl)

building: 12.3.2.2. Building the httpd_perl server (Practical mod_perl)
configuring: 12.3.3.2. Basic httpd_perl server configuration (Practical mod_perl)

httpd.pid file: 5.3.3. Finding the Right Apache PID (Practical mod_perl)

$HTTP_ENV_VARS array: 11.4. Securing User Data (Managing & Using MySQL)

7.2. Variables (Programming PHP)

httperf utility: 9.1.2. httperf (Practical mod_perl)

$HTTP_GET_VARS array: 11.4. Securing User Data (Managing & Using MySQL)

http_load utility: 9.1.3. http_load (Practical mod_perl)

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

$HTTP_POST_FILES array: 7.2. Variables (Programming PHP)

$HTTP_POST_VARS array: 11.4. Securing User Data (Managing & Using MySQL)

7.2. Variables (Programming PHP)

$HTTP_RAW_POST_DATA variable: 11.5.1. Servers (Programming PHP)

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

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

$HTTP_SERVER_VARS array: 11.4. Securing User Data (Managing & Using MySQL)

7.2. Variables (Programming PHP)

$HTTP_SESSION_VARS array: 11.4. Securing User Data (Managing & Using MySQL)

7.6.2.1. Session basics (Programming PHP)

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

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

Hughes, David: 1.2. The History of MySQL (Managing & Using MySQL)

Hughes, Sterling: 11.8. Where to Find Out More (Managing & Using MySQL)

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

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

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

h2xs, creating modules: 13.12.1. Building Perl Extensions with XS and h2xs (Practical mod_perl)

Hypertext Transfer Protocol (see HTTP)

7.1. HTTP Basics (Programming PHP)

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

hyphen (-): 13.2.5. Multiple Commands (Running Linux)

hyphen (-) and metamail command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

Hyptertext Markup Language (see HTML)

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