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: S

sanity checks: 23. Getting Help and Online Resources

scalability, resources: 23.3.9. Performance and Scalability

scalar variables

redirecting to STDOUT: 6.4.5. Redirecting STDOUT into a Scalar Variable

sharing: 10.1.2.1. Variable unsharing caused by regular expressions

screen media type: E.6. Putting Everything Together

ScriptAlias directive: 1.1.3. Apache CGI Handling with mod_cgi

4.2.1. Alias Configurations

SCRIPT_FILENAME variable: 1.1.3. Apache CGI Handling with mod_cgi

SCRIPT_NAME variable: 1.1.3. Apache CGI Handling with mod_cgi

scripts

Apache configuration: 3.1. Configuring the Source

apachectl: 5.4. Using apachectl to Control the Server

Apache::PerlRun compared to Apache::Registry: 1.3.1. Running CGI Scripts with mod_perl

Apache::Registry

BEGIN block execution: 6.4.9. BEGIN blocks

debugging: 21.5.9. Interactive mod_perl Debugging

running: 2.6. A Sample Apache::Registry Script

benchmarking: 1.3.1. Running CGI Scripts with mod_perl

CGI

forking model: 1.2.2. CGI Scripts Under the Forking Model

mod_perl example: 2.6. A Sample Apache::Registry Script

porting to mod_perl: 2.6.1. Porting Existing CGI Scripts to mod_perl

testing mod_perl: 3.10.4. Testing via a CGI Script

command-line switches: 6.5.2. Command-Line Switches

DBI module: 20.1.5.2. Transactions

debugging code, Apache::FakeRequest: 21.5.2. Using Apache::FakeRequest to Debug Apache Perl Modules

directory, configuring: 2.5. Preparing the Scripts Directory

hello user: 1.1.2. The Common Gateway Interface Specification

hello world: 1.1.2. The Common Gateway Interface Specification

hooks, checking for: 3.1.6. Discovering Whether a Feature Was Enabled

input arguments, processing: 13.2. Apache::args Versus Apache::Request::param Versus CGI::param

migrating to mod_perl: 4.2.1.1. Running scripts located in the same directory under different handlers

mod_cgi, converting to Perl content handler: 6.7.2. Converting into a Perl Content Handler

server rebooting: 5.7. Preparing for Machine Reboot

setuid: 5.6. Setuid root Startup Scripts

executable: 5.6.1. Introduction to setuid Executables

security issues: 5.6.2. Apache Startup Script's setuid Security

setuid, ample startup script: 5.6.3. Sample setuid Apache Startup Script

TEST: 3.3.1. Manual Testing

testing, importance of: 2.8. Is This All We Need to Know About mod_perl?

troubleshooting: 2.6.1. Porting Existing CGI Scripts to mod_perl

upgrading on live servers: 5.8.2.2.6. Moving files and restarting the server

SDBM_File: 19. DBM and mod_perl

search engines: 1.1. A Brief History of CGI

request-rate speed, limiting: 5.11.6. Limiting the Request-Rate Speed (Robot Blocking)

sections (Apache configuration file)

creating subgroups: 4.1.5. Subgrouping of <Directory>, <Location>, and <Files> Sections

merging: 4.1.4. Merging <Directory>, <Location>, and <Files> Sections

security

cross-site scripting and: 1.1.2. The Common Gateway Interface Specification

encryption, Stronghold: 3.6.4. Installing mod_perl with Stronghold

installation issues: 3.11.1. How Do I Make the Installation More Secure?

making inaccessible: 4.10.4. Making the mod_perl Server Inaccessible from the Outside

mod_proxy and: 12.7.1.3. Security issues

modules and: 4.10.1. Using Only Absolutely Necessary Components

server information, hiding: 4.10.3. Hiding Server Information

server monitors: 4.10.5. Protecting Private Status Locations

setuid scripts: 5.6.2. Apache Startup Script's setuid Security

SSL, mod_perl server and: 12.14. SSL Functionality and a mod_perl Server

symbolic links: 11.7. Symbolic Links Lookup

taint checking: 4.10.2. Taint Checking

taint mode: 6.5.2.2. Taint mode

web security resources: 23.3.10. Web Security

Segfaults When Using XML::Parser, message: 22.3.2. Segfaults When Using XML::Parser

Segmentation fault error, debugging: 21.6. Analyzing Dumped core Files

semicolons, importance of: 21.5.1. Locating and Correcting Syntax Errors

send_http_header( ): 6.11. Generating Correct HTTP Headers

separators, key-value pairs: 1.1.2. The Common Gateway Interface Specification

server: 12.4. One Light Non-Apache and One mod_perl-Enabled Apache Server

(see also two server approach)

build options: 3.5. Installation Scenarios for Standalone mod_perl

building: 3.2. Building mod_perl (make)

building manually: 3.4.1. Manually Building a mod_perl-Enabled Apache

closing connections: 12.7.4. Closing Lingering Connections with lingerd

configuration

Perl: 4.4. Apache Configuration in Perl

validating syntax: 4.5. Validating the Configuration Syntax

creating, three-ties scheme for: 5.9. Three-Tier Server Scheme: Development, Staging, and Production

deployment

overview: 12.1. mod_perl Deployment Overview

standalone: 12.2. Standalone mod_perl-Enabled Apache Server

development, starting for each developer: 5.9.1. Starting a Personal Server for Each Developer

disabling code

Apache::Registry: 5.8.3.1. Disabling code running under Apache::Registry

handlers and: 5.8.3.2. Disabling code running under other handlers

overview: 5.8.3. Disabling Scripts and Handlers on a Live Server

disabling services: 5.8.3.3. Disabling services with help from the frontend server

exiting: 6.4.1. exit( )

extensibility of: 3.1. Configuring the Source

features and hooks used, determining: 3.1.6. Discovering Whether a Feature Was Enabled

httpd: 1.1. A Brief History of CGI

information, hiding: 4.10.3. Hiding Server Information

killing: 5.2. Starting the Server in Single-Process Mode

load handling directives: 11.3. Setting MinSpareServers, MaxSpareServers, and StartServers

maintenance, log files: 5.11.1. Handling Log Files

make install command: 3.4. Installation (make install)

mod_perl enabled, commands for building: 3. Installing mod_perl

monitoring

Apache::VMonitor: 5.10.2. Apache::VMonitor—The Visual System and Apache Server Monitor

automated: 5.10.3. Automated Monitoring

interactive: 5.10.1. Interactive Monitoring

multiple, hosting options: 12.1. mod_perl Deployment Overview

multiple instances, configuration options for: 3.1. Configuring the Source

proxy

adding in httpd accelerator mode: 12.5. Adding a Proxy Server in httpd Accelerator Mode

virtual hosts: 12.10.1. Virtual Host Flavors

remote, getting IP address: 12.9. Getting the Remote Server IP in the Backend Server in the Proxy Setup

requirements, three-tier archetecture: 12.12.1. Server Requirements

12.12.2. The Problem

restarting

mod_perl 2.0 process: 25.1.2.6. PerlFreshRestart

PerlFresRestart directive: 4.2.9. PerlFreshRestart

running multiple on one machine: 12.13. Running More than One mod_perl Server on the Same Machine

security, making inaccessible: 4.10.4. Making the mod_perl Server Inaccessible from the Outside

single-process mode

debugging and: 6.2.2. The Second Mystery—Inconsistent Growth over Reloads

error_log file and: 21.1.2. Curing "Internal Server Error" Problems

Squid

advantages: 12.6.1. Pros and Cons

implementation: 12.6.2. Light Apache, mod_perl, and Squid Setup Implementation Details

overview: 12.6. The Squid Server and mod_perl

two server approach and: 12.6.3. mod_perl and Squid Setup Implementation Details

start procedure: 4.7. Apache Restarts Twice

starting/stopping, apachectl utility: 2.3. Configuring and Starting the mod_perl Server

startup/shutdown cycle logging: 25.2. New Apache Phases and Corresponding Perl*Handlers

testing

make test command: 3.3. Testing the Server (make test)

make test command troubleshooting: 3.3.2. make test Troubleshooting

TEST script: 3.3.1. Manual Testing

timeout, coding considerations: 6.10. Handling Server Timeout Cases and Working with $SIG{ALRM}

upgrading

CVS and: 5.8.2.2.7. Using CVS for code upgrades

Internet cluster servers: 5.8.2.1. The server cluster

Internet single servers: 5.8.2.2. The single server

Intranet servers: 5.8.1. Upgrading Intranet Servers

overview: 5.8. Upgrading a Live Server

Perl code: 5.8.2.2.5. Upgrading Perl code

port forwarding: 5.8.2.2.2. Upgrading a live server with port forwarding

prepackaged components: 5.8.2.2.3. Upgrading a live server with prepackaged components

reusing configuration parameters: 3.1.5. Reusing Configuration Parameters

scripts and handlers: 5.8.2.2.6. Moving files and restarting the server

swapping live and backup servers: 5.8.2.2.1. Upgrading live server components by swapping machines

symbolic links: 5.8.2.2.4. Upgrading a live server using symbolic links

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

server and configuration modules: B. Apache Perl Modules

server configuration modules: B.4.1. Apache::ModuleConfig—Interface to Configuration API

server dependencies, isolating: 5.9. Three-Tier Server Scheme: Development, Staging, and Production

server startup: 4.3. The Startup File

@INC, modifying: 6.8.1. The @INC Array Under mod_perl

module initialization: 10.1.5. Module Initialization at Server Startup

modules

preloading: 10.1.3. Preloading Perl Modules at Server Startup

which to add: 4.3.3. What Modules Should Be Added to the Startup File

preloading registry scripts: 10.1.4. Preloading Registry Scripts at Server Startup

sample: 4.3.1. A Sample Startup File

syntax validation: 4.3.2. Syntax Validation

use( ) function: 4.3.4. The Confusion with use( ) in the Server Startup File

SERVER_ADDR variable: 1.1.3. Apache CGI Handling with mod_cgi

SERVER_PROTOCOL variable: 1.1.3. Apache CGI Handling with mod_cgi

SERVER_SOFTWARE variable: 1.1.3. Apache CGI Handling with mod_cgi

services, disabling on live servers: 5.8.3.3. Disabling services with help from the frontend server

set_content_length( ): 16.2.2. Content-Length Header

SetHandler directive: 4.2.1. Alias Configurations

SetHandler (<Location> section): 4.2.2. <Location /perl> Sections

SetHandler/perl-script directive: 4.2.1. Alias Configurations

set_last_modified( ): 16.1.2. Last-Modified Header

setrlimit( ): 5.11.3. Limiting Resources Used by Apache Child Processes

sets, comparing, memory leaks and: 14.2.6. Memory Leakage

setuid scripts: 5.6. Setuid root Startup Scripts

5.6.3. Sample setuid Apache Startup Script

executable: 5.6.1. Introduction to setuid Executables

security issues: 5.6.2. Apache Startup Script's setuid Security

SetupEnv option, PerlOptions directive: 24.5.6.9. SetupEnv

shared locks: 19.2. Resource Locking

shared memory

maximum size: 14.1.2. Defining the Maximum Memory Size Threshold

minimum size: 14.1.1. Defining the Minimum Shared Memory Size Threshold

shared variables, regular expressions and: 10.1.2.1. Variable unsharing caused by regular expressions

shell aliases, error_log file and: 21.1.3. Making Use of the error_log

shortmess macro: 21.7.5. mod_perl gdb Debug Macros

shutdown, troubleshooting: 22.4. Shutdown and Restart

signal handlers, trapping errors: 21.1.4. Displaying Errors to Users

signal.h file: 5.3.1. kill Signals for Stopping and Restarting Apache

signals

kill command: 5.3. Using kill to Control Processes

numerical equivalents: 5.3.1. kill Signals for Stopping and Restarting Apache

stopping/restarting Apache: 5.3.1. kill Signals for Stopping and Restarting Apache

SIGPIPE, emulating behavior of: 6.9. Handling the "User Pressed Stop Button" Case

single-process mode

error_log file and: 21.1.2. Curing "Internal Server Error" Problems

multiple developers and: 5.9.1. Starting a Personal Server for Each Developer

running server as, debugging and: 6.2.2. The Second Mystery—Inconsistent Growth over Reloads

starting server: 5.2. Starting the Server in Single-Process Mode

single-server mode, debugging: 21.2. Debugging Code in Single-Server Mode

single-stepping (perldb): 21.5.6. Introduction to the Perl Debugger

singleton database handles: A.12. Singleton Database Handles

site_perl directory: 3.8. Installing mod_perl on Multiple Machines

skipping test (make test error report): 3.3.2.3. make test......skipping test on this platform

sleep( ), alarm( ) function and: 6.10. Handling Server Timeout Cases and Working with $SIG{ALRM}

smart-memory page caching: 10.1.1. Calculating Real Memory Usage

socket connections

broken, cleanup code: 6.9.2. The Importance of Cleanup Code

detecting broken

overview: 6.9. Handling the "User Pressed Stop Button" Case

tracing techniques: 6.9.1. Detecting Aborted Connections

Solaris, buffer sizes, changing: 12.7.3. Buffering Feature

source code

Apache, configuration: 3.1. Configuring the Source

mod_perl installation: 24.4.1. Installing from Source

preparing for manual build: 3.4.1. Manually Building a mod_perl-Enabled Apache

two server approach, configuring: 12.3.2. Configuration and Compilation of the Sources

unpacking: 2.2.1. Obtaining and Unpacking the Source Code

Spambot Trap: 5.11.6. Limiting the Request-Rate Speed (Robot Blocking)

speed

packets and: 7.1. Looking at the Big Picture

performance and: 7.1. Looking at the Big Picture

spiders, limiting request-rate speed: 5.11.6. Limiting the Request-Rate Speed (Robot Blocking)

spinning processes, mod_perl mailing list reports: 23.1.2. Spinning Processes

splitlog web site: 12.16. References

spoofing, HTTP_USER_AGENT variable: 1.1.3. Apache CGI Handling with mod_cgi

Spread web site: 5.12. References

SQL, information resources: 23.3.6. DBI and SQL

Squid server

advantages: 12.6.1. Pros and Cons

implementation: 12.6.2. Light Apache, mod_perl, and Squid Setup Implementation Details

information resources: 23.3.7. Squid

overview: 12.6. The Squid Server and mod_perl

two server approach and: 12.6.3. mod_perl and Squid Setup Implementation Details

squid.conf file: 12.6.2. Light Apache, mod_perl, and Squid Setup Implementation Details

SSL, mod-perl server and: 12.14. SSL Functionality and a mod_perl Server

SSL_BASE configuration parameter: 3.1.1. Controlling the Build Process

stability of operating system: 8.1.2. Stability and Robustness

stacked handlers

enabling: 3.1.4. Enabling Extra Features

executing directives: 4.2.7. Stacked Handlers

staging tier (server implementation)

configuration package: 5.9. Three-Tier Server Scheme: Development, Staging, and Production

overview: 5.9. Three-Tier Server Scheme: Development, Staging, and Production

standalone server, advantages/disadvantages: 12.2. Standalone mod_perl-Enabled Apache Server

start_detached_monitor( ): 5.11.4. Tracking and Terminating Hanging Processes

start_monitor( ): 5.11.4. Tracking and Terminating Hanging Processes

StartServers directive: 4.1.7. MinSpareServers, MaxSpareServers, StartServers, MaxClients, and MaxRequestsPerChild

11.3. Setting MinSpareServers, MaxSpareServers, and StartServers

startup file: 4.3. The Startup File

modules, which to add: 4.3.3. What Modules Should Be Added to the Startup File

sample: 4.3.1. A Sample Startup File

syntax validation: 4.3.2. Syntax Validation

use( ) function: 4.3.4. The Confusion with use( ) in the Server Startup File

startup files, mod_perl configuration: 24.5.3. Startup File

startup processing, event tracing: 21.4. Tracing mod_perl-Specific Perl Calls

startup.pl file: 4.1.1. Configuration Files

@INC, modifying: 6.8.1. The @INC Array Under mod_perl

key-value pair processing modules, preloading: 13.2. Apache::args Versus Apache::Request::param Versus CGI::param

modules, which to add: 4.3.3. What Modules Should Be Added to the Startup File

sample: 4.3.1. A Sample Startup File

use( ) function: 4.3.4. The Confusion with use( ) in the Server Startup File

starvation of exclusive locks: 19.2.2. Exclusive Locking Starvation

stat( )

alternatives to repeat calls: 13.7. Using the Perl stat( ) Call's Cached Results

reducing calls to: 11.6. Reducing the Number of stat( ) Calls Made by Apache

stateless protocol: 1.1.1. The HTTP Protocol

static build (Apache server): 3.5.1. The All-in-One Way

static documents: 1.1. A Brief History of CGI

static object request rate, performance considerations: 12.2. Standalone mod_perl-Enabled Apache Server

static objects

non-Apache servers and: 12.4. One Light Non-Apache and One mod_perl-Enabled Apache Server

server performance considerations: 12.3. One Plain and One mod_perl-Enabled Apache Server

status codes (see HTTP, status codes)

status, informatoin gathering modules: 21.9.1. Apache::Status—Embedded Interpreter Status Information

StatusDeparse variable: 21.9.1.2. Extended configuration

StatusDumper variable: 21.9.1.2. Extended configuration

StatusGraphvariable: 21.9.1.2. Extended configuration

StatusLexInfo variable: 21.9.1.2. Extended configuration

StatusOptionsAll variable: 21.9.1.2. Extended configuration

StatusPeek variable: 21.9.1.2. Extended configuration

StatusTerse variable: 21.9.1.2. Extended configuration

StatusTerseSize variable: 21.9.1.2. Extended configuration

StatusTerseSizeMainSummary variable: 21.9.1.2. Extended configuration

STDERR: 6.4.4. STDIN, STDOUT, and STDERR Streams

error messages and: 21.1.2. Curing "Internal Server Error" Problems

freeing parent processes: 10.2.2. Freeing the Parent Process

STDIN: 6.4.4. STDIN, STDOUT, and STDERR Streams

freeing parent process: 10.2.2. Freeing the Parent Process

STDOUT: 6.4.4. STDIN, STDOUT, and STDERR Streams

freeing parent processes: 10.2.2. Freeing the Parent Process

redirecting to scalar variable: 6.4.5. Redirecting STDOUT into a Scalar Variable

step command: 21.5.6. Introduction to the Perl Debugger

stepping into subroutines (debugging): 21.5.6. Introduction to the Perl Debugger

stop_monitor( ): 5.11.4. Tracking and Terminating Hanging Processes

strace utility: 21.3. Tracing System Calls

stream-based HTTP request input filter: 25.3.3.3. Stream-based HTTP request input filter

stream-based HTTP request output filter: 25.3.4.1. Stream-based HTTP request output filter

streaming filter interface, I/O filtering: 25.3.1.1. Two methods for manipulating data

strict pragma, importance of: 6.1.2. The strict Pragma

string access to variables: 10.1.2.2. Numerical versus string access to variables

strings, concatenation, performance and: 13.4. Interpolation, Concatenation, or List

Stronghold, mod+perl installation with: 3.6.4. Installing mod_perl with Stronghold

stylesheets

AxKit and: E.2.2. How it Works?

screen media type and: E.6. Putting Everything Together

XSLT: E.5.1. Anatomy of an XSLT Stylesheet

subroutines: 13.6. Object Methods Calls Versus Function Calls

13.6. Object Methods Calls Versus Function Calls

(see also functions)

breakpoints: 21.5.6. Introduction to the Perl Debugger

callbacks, activating: 3.1.2. Activating Callback Hooks

code profiling: 9.5. Code Profiling Techniques

Devel::DProf: 9.5.1. Profiling with Devel::DProf

Devel::SmallProf: 9.5.2. Profiling with Devel::SmallProf

coding errors and: 6.2.1. The First Mystery: Why Does the Script Go Beyond 5?

debugging, stepping into: 21.5.6. Introduction to the Perl Debugger

exporting, configuration files and: 6.8.2.4.1. Writing configuration files

handler( ): 4.2.5. The handler( ) Subroutine

memory usage, determining: 9.4. Apache::Status and Measuring Code Memory Usage

performance: 13.6.1. The Overhead with Light Subroutines

saving as libraries: 6.2.1. The First Mystery: Why Does the Script Go Beyond 5?

variables, passing to: 14.2.5. Passing Variables

suExec, running mod_perl Apache as: 3.11.2. Can I Run mod_perl-Enabled Apache as suExec?

sv_dump( ): 14.2.6. Memory Leakage

swap files, memory swapping, disadvantages: 5.11.2. Swapping Prevention

swap memory: 5.11.2. Swapping Prevention

swap partition: 5.11.2. Swapping Prevention

swapping (memory pages): 5.11.2. Swapping Prevention

8.2.5. How Much Memory Is Enough?

disadvantages: 5.11.2. Swapping Prevention

effects of: 11.1. Setting the MaxClients Directive

SWIG web site: 13.13. References

switches, command-line, mod_perl configuration: 24.5.4. Perl's Command-Line Switches

symbol table, accessing: 21.8.4. Devel::Symdump and Apache::Symdump

symbolic links

coding considerations: 6.6.2. Symbolic Links

creating: 5.7. Preparing for Machine Reboot

libgdbm errors: 3.1.8.2. Missing or misconfigured libgdbm.so

symbols, imported, memory considerations: 13.5.2. Importing Symbols

SymLinksIfOwnerMatch: 11.7. Symbolic Links Lookup

syntax

errors, debugging: 21.5.1. Locating and Correcting Syntax Errors

functions, documentation: 6.1.1. Accessing Documentation

starting Apache server: 4.1.1. Configuration Files

stopping server: 5.7. Preparing for Machine Reboot

subroutine references: 3.1.2. Activating Callback Hooks

validating

server configuration: 4.5. Validating the Configuration Syntax

startup file: 4.3.2. Syntax Validation

verification, <Perl> sections: 4.4.5. Verifying <Perl> Sections

syntax error at /dev/null line 1, near "line arguments:" message: 22.3.11. syntax error at /dev/null line 1, near "line arguments:"

syslog: 5.11.1.3. Centralized logging

system( )

executing correctly: 10.2.8. Executing system( ) or exec( ) in the Right Way

system( ) function: 6.4.8. Output from System Calls

system calls

sending output to browser: 6.4.8. Output from System Calls

tracing: 21.3. Tracing System Calls

system calls trace, diagnosing hanging processes: 21.7.4.2. Using the system calls trace

system requirements

dumping core files: 21.6.3. Dumping the core File

memory, mod_perl: 1.3. The Development of mod_perl 1.0

mod_perl installation: 2.1. Installing mod_perl 1.0 in Three Steps

SysV

init system, server rebooting and: 5.7. Preparing for Machine Reboot