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Index: S

• s
• • as squeeze option of tr : Transliteration
  • as substitute operator : Substitutions
• s, in regular expressions : Single-Character Patterns
• operator
• • and making basename of file : File and Directory Manipulation
  • example of
  • • The Final Programs
    • Globbing
  • making basename of file : File and Directory Manipulation
• -s operator : The -x File Tests
• -S operator : The -x File Tests
• (sed-to-Perl) conversion utility : Converting sed Programs to Perl
• save( ) : Objects in CGI.pm
• scalar assignment, used as a value : Scalar Operators and Functions
• scalar context : Scalar and List Context
• • introduced : Assignment
  • readdir( ) and : Reading a Directory Handle
• scalar data
• • What Is Scalar Data?
  • Assignment
• scalar variables
• • Asking Questions and Remembering the Result
  • Scalar Variables
  • operators for : Scalar Operators and Functions
• scientific notation, in floating-point numbers : Float Literals
• Scooby Doo, pronouncing "Windex" : Finding a Substring
• scrolling_list( ) : Fancier Calling Sequences
• secret words, guessing : Guessing the Secret Word
• sed command, substitute operator and : Simple Uses of Regular Expressions
• sed scripts, converting to Perl : Converting sed Programs to Perl
• seek( ) operator
• • Fixed-Length Random Access Databases
  • Objects in CGI.pm
• select( ) operator : Using select( ) to Change the Filehandle
• sending signals : Sending and Receiving Signals
• sendmail aliases database : DBM Databases and DBM Hashes
• sequence, in regular expressions : Sequence
• sequential access, to password file : Getting Password and Group Information
• servers, CGI programs and : Your CGI Program in Context
• setenv command, emulating : Using system and exec
• setgrent( ) operator : Getting Password and Group Information
• setpwent( ) operator : Getting Password and Group Information
• shell scripts : Basic Concepts
• • converting to Perl (ha!) : Converting Shell Programs to Perl
• shells, avoiding for new processes : Using system and exec
• shift( ) operator : The shift and unshift Functions
• • default of @ARGV and : File and Directory Manipulation
  • example of : File and Directory Manipulation
• :shortcuts import tag : Less Typing
• %SIG variable : Sending and Receiving Signals
• SIGINT (signal name) : Sending and Receiving Signals
• signals : Sending and Receiving Signals
• • catching : Sending and Receiving Signals
  • ignoring : Sending and Receiving Signals
  • restoring default action of : Sending and Receiving Signals
  • sending : Sending and Receiving Signals
• Simple module : Web Automation with LWP
• single-quoted strings : Single-Quoted Strings
• skiing : Stroll Through Perl
• slices
• • array : Array Element Access
  • on literal lists : Array Element Access
  • variable interpolation in strings and : Variable Interpolation of Arrays
• sort comparison routines : Advanced Sorting
• • using array lookups : Advanced Sorting
• sort( ) operator
• • Maintaining a Last-Good-Guess Database
  • The sort Function
  • controlling sort order of : Advanced Sorting
  • example of
  • • Directory Access
    • Other Data Transformation
    • System Database Access
    • Getting Password and Group Information
• sorting
• • advanced : Advanced Sorting
  • example of numeric : Advanced Sorting
• space : (see whitespace)
• spaceship (<=>) operator : Advanced Sorting
• • example of : User Database Manipulation
• split( ) operator : The split Function
• • example of
  • • Formats
    • Process Management
    • Invoking a Format
• sprintf( ) operator : Formatting Data with sprintf( )
• • compared with pack( ) : Packing and Unpacking Binary Data
  • example of : Numeric Fields
• Sprite : Double-Quoted Strings
• square brackets ([ ]), in regular expressions : Single-Character Patterns
• srand( ) operator, example of : Exercises
• :standard import tag : Less Typing
• standard error
• • of command in backquotes : Using Backquotes
  • merging with standard output, in backquotes : Using Backquotes
  • processes open for writing and : Using Processes as Filehandles
• standard input : (see STDIN)
• standard output : (see STDOUT)
• stat( ) operator : The stat and lstat Functions
• statement block
• • (see also blocks)
  • Adding Choices
  • Statement Blocks
• STDERR : What Is a Filehandle?
• • introduced : Moving the Secret Word List into a Separate File
• STDIN
• • Asking Questions and Remembering the Result
  • Moving the Secret Word List into a Separate File
  • Input from STDIN
  • What Is a Filehandle?
  • in array context
  • • Basic I/O
    • <STDIN> as an Array
  • of command in backquotes : Using Backquotes
  • example of
  • • The Final Programs
    • Input from STDIN
    • The last Statement
  • example of using : <STDIN> as a Scalar Value
  • reading from : Input from STDIN
  • as scalar value : <STDIN> as a Scalar Value
  • as target of match : Selecting a Different Target (the =~ Operator)
  • undef return value and : The Undefined Value
• STDOUT
• • Moving the Secret Word List into a Separate File
  • What Is a Filehandle?
  • example of using : Output with print
  • processes open for writing and : Using Processes as Filehandles
• Stein, Lincoln : The CGI.pm Module
• string comparison operators : Operators for Strings
• string concatenation : Operators for Strings
• string operators : Operators for Strings
• string repetition operator : Operators for Strings
• strings
• • What Is Scalar Data?
  • Strings
  • automatic conversion to numbers and : Conversion Between Numbers and Strings
  • counting characters in : Transliteration
  • deleting characters from : Transliteration
  • length of : Strings
  • literal representation of : Strings
  • query strings : Your CGI Program in Context
  • removing last character : The chop and chomp Functions
• sub keyword
• • Making It a Bit More Modular
  • Defining a User Function
  • example of
  • • Functions
    • The Final Programs
• submit button : Form Generation
• subroutine definitions
• • example of : Functions
  • location of in file : Making It a Bit More Modular
  • location of in text : Defining a User Function
  • re-defining : Defining a User Function
• subroutines
• • Making It a Bit More Modular
  • Defining a User Function
  • arguments : Arguments
  • invoking : Invoking a User Function
  • lack of locals : Defining a User Function
  • nested invocation of : Invoking a User Function
  • return values of : Return Values
  • scope of variables and : Defining a User Function
• subscripts
• • with array elements : Array Element Access
  • array expressions and : Array Element Access
  • references : More than One Secret Word
• substitute operator
• • Making It Fair for the Rest
  • Simple Uses of Regular Expressions
  • Substitutions
• substr( ) operator : Extracting and Replacing a Substring
• • example of : Other Data Transformation
  • variable as first argument : Extracting and Replacing a Substring
• substrings, finding : Finding a Substring
• subtraction, operator for : Operators for Numbers
• support for Perl : Support
• symbolic links : (see symlinks)
• symlink( ) operator : Creating Hard and Soft Links with Perl
• • compilation failure and : Creating Hard and Soft Links with Perl
  • example of : File and Directory Manipulation
• symlinks : Creating Alternate Names for a File: Linking
• • nested : About Hard and Soft Links
  • operation of : About Hard and Soft Links
  • referencing non-existing files : About Hard and Soft Links
• sysopen( ) : Objects in CGI.pm
• system( ) operator : Using system and exec
• • composed of fork and exec : Using fork
  • example of : Process Management
  • list of arguments to : Using system and exec
  • PATH and : Using system and exec

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