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Index: S

s/// operator: 1.1.3. Discussion

stripping whitespace with: 1.16.2. Solution

/s pattern-matching modifier: 6.. Pattern-Matching Modifiers

multiple lines: 6.6.2. Solution

save( ), HTML forms: 19.12.2. Solution

save_parameters( ), HTML forms: 19.12.2. Solution

SAX (Simple API for XML): 22.3.1. Problem

events, parsing XML into: 22.3.1. Problem

scalar multiplication operator: 2.13.3. Discussion

scalar operator, list version: 10.8.3. Discussion

scalars: 1.. Introduction

arrays of scalar references: 11.6.1. Problem

detecting scalar context: 10.6.1. Problem

exchanging values between: 1.3.1. Problem

as numbers: 2.. Introduction

references to: 11.5.1. Problem

Scalar::Util module: 2.1.3. Discussion

11.15.3. Description

schemas, XML: 22.. Schemas

schemes, URLs: 19.. Architecture

scope of subroutine variables: 10.2.3. Discussion

screen (see user interfaces)

scripts, CGI (see CGI programming)

SDBM files: 14.. Introduction

search( ), LDAP server: 18.8.3. Discussion

searching for patterns (see regular expressions)

seconds (see date and time values)

Secure Sockets Layer (SSL): 20.16.1. Problem

security

CGI scripts: 19.. Security

19.4.1. Problem

executing user commands: 19.5.1. Problem

connecting through firewalls: 17.21. Program: fwdport

fetching secure web pages: 20.16.1. Problem

reading passwords without echo: 15.10.1. Problem

testing files for trustworthiness: 8.17.1. Problem

seek( ): 8.. Advanced Operations

8.5.3. Discussion

seek offset, filehandles: 7.. I/O Operations

seekdir( ): 9.5.3. Discussion

select( ): 3.10.2. Solution

determining whether data can be read or written: 17.3.2. Solution

reading from multiple filehandles: 7.22.2. Solution

17.3.3. Discussion

self-referential data structures: 13.13.1. Problem

SelfLoader module: 12.10.2. Solution

send( ), communicating over TCP: 17.3.2. Solution

sendmail program: 18.3.2. Solution

servers

daemon servers: 17.17.1. Problem

database, using SQL without: 14.18.1. Problem

forking: 17.11.1. Problem

LDAP: 18.8.1. Problem

18.8.3. Discussion

search( ): 18.8.3. Discussion

multihomed: 17.16.1. Problem

multitasking, writing: 17.14.1. Problem

with POE: 17.15.1. Problem

non-forking: 17.13.1. Problem

POP3: 18.5.1. Problem

preforking: 17.12.1. Problem

processing logs: 20.13.3. Discussion

restarting on demand: 17.18.1. Problem

SMTP: 18.16. Program: expn and vrfy

SOAP: 18.13.1. Problem

TCP, writing: 17.2.1. Problem

UDP, setting up: 17.5.1. Problem

web

common log format fields: 20.12.3. Discussion

performance, improving: 21.12.1. Problem

set theory: 4.8.1. Problem

setitimer( ): 3.9.3. Discussion

setting default I/O layers: 8.19.1. Problem

SGML (Standard Generalized Markup Language): 22.. Introduction

shallow copies: 11.12.3. Discussion

shared locks: 7.18.3. Discussion

sharing variables among processes: 16.12.1. Problem

shell escapes, executing commands without: 19.5.1. Problem

shell wildcards for regular expression matching: 6.9.1. Problem

shift( ), circular lists: 4.17.2. Solution

shopping cart applications: 19.11.1. Problem

shuffle( )

arrays: 4.18.2. Solution

lines: 8.7.2. Solution

shutdown( ): 17.9.2. Solution

%SIG hash: 16.15.2. Solution

SIGALRM signal: 16.. Signals

16.21.2. Solution

SIGCHLD signal: 16.. Signals

16.19.2. Solution

SIGHUP signal: 16.. Signals

17.18.2. Solution

SIGINT signal: 16.. Signals

16.18.2. Solution

signal handlers: 16.15.1. Problem

overriding: 16.16.1. Problem

writing: 16.17.1. Problem

signals: 16.. Signals

blocking: 16.20.1. Problem

handlers for (see signal handlers)

listing available: 16.13.1. Problem

process groups: 7.25. Program: lockarea

16.14.3. Discussion

sending: 16.14.1. Problem

turning into fatal errors: 16.22.1. Problem

signatures, randomized: 16.23. Program: sigrand

SIGPIPE signal: 16.. Signals

16.4.3. Discussion

sigprocmask syscall: 16.20.2. Solution

SIGQUIT signal: 16.. Signals

sigrand program: 16.23. Program: sigrand

SIGTERM signal: 16.. Signals

sigtrap pragma: 16.22.2. Solution

SIGUSR1/SIGUSR2 signals: 16.. Signals

Simple API for XML (SAX): 22.3.1. Problem

simple difference: 4.9.3. Discussion

Simple Mail Transfer Protocol (SMTP): 18.3.3. Discussion

Simple Object Access Protocol (see SOAP)

sin( ): 2.11.2. Solution

single inheritance: 13.. Inheritance

single quote ('): 1.. Introduction

escaping: 14.10.1. Problem

size

arrays, changing: 4.3.1. Problem

hashes, preallocating for: 5.14.1. Problem

Tk window resize events: 15.16.1. Problem

window or terminal, determining: 15.4.1. Problem

sleep( ): 3.9.3. Discussion

3.10.1. Problem

SMTP (Simple Mail Transfer Protocol): 18.3.3. Discussion

server: 18.16. Program: expn and vrfy

SOAP (Simple Object Access Protocol): 18.. Introduction

client: 18.14.1. Problem

server: 18.13.1. Problem

SOAP::Lite module: 18.11.3. Discussion

18.13.2. Solution

SOCK_ constants: 17.. Introduction

sockaddr_in( ): 17.. Introduction

17.4.3. Discussion

sockaddr_un( ): 17.. Introduction

Unix domain sockets: 17.6.2. Solution

socket( ): 17.. Introduction

sockets: 17.. Introduction

bidirectional clients: 17.10.1. Problem

closing after forking: 17.9.1. Problem

connecting through firewalls: 17.21. Program: fwdport

daemon servers: 17.17.1. Problem

finding own name and address: 17.8.1. Problem

forking servers: 17.11.1. Problem

identifying machine at end: 17.7.1. Problem

logging port connection attempts: 17.20. Program: backsniff

managing multiple input streams: 17.19.1. Problem

multihomed servers: 17.16.1. Problem

non-blocking: 17.2.3. Discussion

non-forking servers: 17.13.1. Problem

preforking servers: 17.12.1. Problem

protocol associated with: 17.. Introduction

restarting servers on demand: 17.18.1. Problem

TCP protocol

communicating over: 17.3.1. Problem

writing clients: 17.1.1. Problem

writing servers: 17.2.1. Problem

UDP protocol

writing clients for: 17.4.1. Problem

writing servers for: 17.5.1. Problem

Unix domain: 17.. Introduction

17.6.1. Problem

sort( ): 4.15.2. Solution

by computable field: 4.16.2. Solution

hashes: 5.10.2. Solution

sorting

array elements numerically: 4.15.1. Problem

arrays and lists by computable field: 4.16.1. Problem

DBM files: 14.5.1. Problem

directory contents: 9.. Introduction

9.13. Program: lst

du command output: 5.17. Program: dutree

hash elements: 5.10.1. Problem

mail: 10.18. Program: Sorting Your Mail

pod =head1 sections: 15.22. Program: tkshufflepod

randomizing array element order: 4.18.1. Problem

randomizing file line order: 8.7.1. Problem

text into columns: 4.19. Program: words

soundex( ): 1.22.3. Discussion

Soundex matching: 1.22.1. Problem

splice( ): 4.12.2. Solution

split( ): 1.6.2. Solution

processing all words in file: 8.3.2. Solution

reading records with pattern separators: 6.7.2. Solution

using reverse( ) with: 1.7.2. Solution

variable-length text fields: 8.9.2. Solution

sprintf( ): 1.4.3. Discussion

floating-point numbers

comparing: 2.3.2. Solution

rounding: 2.2.2. Solution

SQL database: 20.9.3. Discussion

SQL queries

building programmatically: 14.13.1. Problem

without database server: 14.18.1. Problem

executing using DBI: 14.9.1. Problem

querying CSV files: 14.17.1. Problem

repeating efficiently: 14.12.1. Problem

saving results to Excel or CSV: 14.8.1. Problem

square brackets ([]): 1.. Introduction

creating anonymous arrays and hashes: 11.. References

srand( ): 2.7.2. Solution

SSL (Secure Sockets Layer): 20.16.1. Problem

standard filehandles: 7.. Standard Filehandles

Standard Generalized Markup Language (SGML): 22.. Introduction

stat( ): 8.17.2. Solution

9.. Introduction

timestamps: 9.1.2. Solution

static data members: 13.4.1. Problem

Stat::lsMode module: 9.11.2. Solution

STDERR filehandle: 7.. Standard Filehandles

controlling for other programs: 16.9.1. Problem

reading from programs: 16.7.1. Problem

STDIN filehandle: 7.. Standard Filehandles

preprocessing input: 16.6.2. Solution

stdio layer: 7.. I/O Operations

7.10.3. Discussion

STDOUT filehandle: 7.. Standard Filehandles

7.. I/O Operations

filtering output: 16.5.3. Discussion

sticky widgets, creating: 19.10.1. Problem

Storable module: 11.12.2. Solution

13.7.2. Solution

store( ): 11.13.2. Solution

stream sockets: 17.. Introduction

17.11.3. Discussion

strftime( ): 3.1.3. Discussion

3.8.2. Solution

String::Approx module: 1.22.3. Discussion

6.13.3. Discussion

strings

1.12.1. Problem

(see also variables)

accessing substrings: 1.1.1. Problem

canonicalizing with Unicode combined characters: 1.9.1. Problem

checking if valid numbers: 2.1.1. Problem

converting

ASCII to and from HTML: 20.4.1. Problem

case: 1.13.1. Problem

characters and values: 1.4.1. Problem

non-numeric: 2.. Introduction

copying and substituting: 6.1.1. Problem

doubled words, finding: 6.16.1. Problem

escaping characters: 1.18.1. Problem

hash element indices: 5.. Introduction

headlines and titles, capitalizing: 1.14.1. Problem

HTML text substitutions: 20.20. Program: htmlsub

interpolating functions and expressions within: 1.15.1. Problem

matching

letters: 6.2.1. Problem

words: 6.3.1. Problem

null-terminated, reading from binary files: 8.14.1. Problem

numeric operators with: 13.14.4. Example: Overloaded StrNum Class

parsing date and time information in: 3.7.1. Problem

plurals based on numbers: 2.17.1. Problem

processing characters individually: 1.6.1. Problem

psgrep program: 1.24. Program: psgrep

reformatting paragraphs: 1.17.1. Problem

removing leading or trailing spaces: 1.19.1. Problem

removing or extracting HTML tags: 20.6.1. Problem

reversing elements of: 1.7.1. Problem

substituting specific words: 1.23. Program: fixstyle

text color, changing: 15.5.1. Problem

treating as files: 8.23.1. Problem

Unicode

support in Perl: 1.. Unicode Support in Perl

treating as octets: 1.10.1. Problem

treating as single characters: 1.8.1. Problem

universal character code: 1.. The Universal Character Code

StrNum class (example): 13.14.4. Example: Overloaded StrNum Class

struct( ): 13.5.3. Discussion

struct_flock( ), lockarea program: 7.25. Program: lockarea

structs, classes as: 13.5.1. Problem

sub keyword: 10.. Introduction

subclasses, determining membership: 13.9.1. Problem

subject, sorting mail by: 10.18. Program: Sorting Your Mail

subroutines: 10.. Introduction

access arguments: 10.1.1. Problem

built-in, overriding: 12.12.1. Problem

currently running, name of: 10.4.1. Problem

email sorter: 10.18. Program: Sorting Your Mail

exception handling: 10.12.1. Problem

localizing: 10.14.1. Problem

nesting: 10.16.1. Problem

passing arrays and hashes by reference: 10.5.1. Problem

passing by named parameter: 10.7.1. Problem

persistent private variables: 10.3.1. Problem

private for modules: 12.4.1. Problem

private variables: 10.2.1. Problem

prototypes for functions: 10.11.1. Problem

return context, detecting: 10.6.1. Problem

return values

returning by reference: 10.9.1. Problem

returning failure: 10.10.1. Problem

skipping selected: 10.8.1. Problem

saving global values: 10.13.1. Problem

trapping undefined function calls: 10.15.1. Problem

writing switch statement: 10.17.1. Problem

substitution

expanding filenames: 7.3.2. Solution

within strings: 6.1.1. Problem

substr( ): 1.1.2. Solution

operators to use with: 1.1.3. Discussion

pattern matching variables: 6.. Special Variables

substrings: 1.1.1. Problem

SUPER pseudoclass: 13.11.2. Solution

superclasses: 13.. Inheritance

13.. Some Notes on Object Terminology

accessing overridden methods: 13.11.1. Problem

surface copies: 11.12.3. Discussion

surl script: 20.8.3. Discussion

switch construct: 10.17.3. Discussion

Switch module: 10.17.2. Solution

switch statement: 19.7.3. Discussion

19.11.3. Discussion

writing: 10.17.1. Problem

Symbol module: 7.6.2. Solution

symbolic links: 9.. Introduction

duplicating directory trees: 9.12. Program: symirror

to packages: 12.16.1. Problem

symbolic references: 12.16.2. Solution

Symbol::qualify( ): 12.6.3. Discussion

symirror program: 9.12. Program: symirror

symmetric difference: 4.9.3. Discussion

syscalls: 7.. I/O Operations

Sys::Hostname module: 17.8.2. Solution

sysopen( )

filehandles: 7.1.2. Solution

non-blocking I/O: 7.20.2. Solution

unusual filenames: 7.2.2. Solution

sysread( ): 8.. Advanced Operations

sysreadline( ): 7.23.2. Solution

sysseek( ): 8.. Advanced Operations

Sys::Syslog module: 17.20. Program: backsniff

system( )

running multiple programs: 16.2.2. Solution

shell escapes: 19.5.2. Solution

system calls: 7.. I/O Operations

SysV IPC: 16.12.2. Solution

syswrite( ): 8.. Advanced Operations