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Index: S

• s/// substitution operator: Substitutions with s///
• • vs. m// operator: Substitutions with s///
• scalar context: Scalar and List Context
• • forcing: Forcing Scalar Context
• scalar variables
• • autoincrements/autodecrements for: Autoincrement and Autodecrement
  • stat function and: The stat and lstat Functions
• scalars: What Is Scalar Data?
• • values of, assigning to variables: Scalar Assignment
• scope of variables: Notes on Lexical (my) Variables
• • naked block control structure and: The Naked Block Control Structure
• scoped variables (see lexical variables)
• security: Security
• • CGI programs and: The Common Gateway Interface (CGI)
• seek function: Fixed-length Random-access Databases
• select operator: Changing the Default Output Filehandle
• semicolon (;)
• • ending expressions: What's Inside That Program?
  • in for/foreach control structures: The Secret Connection Between foreach and for
  • return value expressions and: Private Variables in Subroutines
• shell, avoiding: Avoiding the Shell
• shift operator: The shift and unshift Operators
• shortcuts: Is Perl Easy or Hard?
• • character class: Character Class Shortcuts
  • negating: Negating the Shortcuts
• SIGINT: Sending and Receiving Signals
• signals, sending/receiving: Sending and Receiving Signals
• single-quoted string literals: Single-Quoted String Literals
• single quotes (' ') enclosing strings: Single-Quoted String Literals
• slash with dot (./): Simple Program
• slices: Slices
• SMTP servers, Net::SMTP module for: The Net::SMTP Module
• sockets (TCP/IP): Sockets
• soft links: Links and Files
• • Links and Files
• sort subroutines (sort-definition subroutines): Advanced Sorting
• sorting
• • advanced: Advanced Sorting
  • sort operator for: The sort Operator
• s2p conversion program: Converting Other Languages to Perl
• spaces: Character Class Shortcuts
• • \\s shortcut for: Character Class Shortcuts
• spaceship operator: Advanced Sorting
• spaceship operator (): Advanced Sorting
• splice operator: The splice Operator
• split operator: The split Operator
• • Slices
  • vs. join function: The join Function
• sports scores, sorting: Sorting a Hash by Value
• sprintf function: Formatting Data with sprintf
• sqrt function: The Naked Block Control Structure
• square brackets ([ ])
• • in character classes: Character Classes
  • in pattern test program results: Pattern Test Program
• square root: Advanced Math Functions
• stacks: The local Operator
• standard error stream: What Is a Filehandle?
• standard input: Getting User Input
• • I/O Basics
• standard input stream: What Is a Filehandle?
• standard output: Output to Standard Output
• • Output to Standard Output
• standard output stream: What Is a Filehandle?
• star (*) as quantifier: Simple Quantifiers
• Star Wars, spaceship operator and: Advanced Sorting
• stat buffer: Using the Special Underscore Filehandle
• stat function: The stat and lstat Functions
• • underscore filehandle and: Using the Special Underscore Filehandle
• stat(2) manpage: The stat and lstat Functions
• STDERR filehandle: What Is a Filehandle?
• • Reopening a Standard Filehandle
• STDIN filehandle: What Is a Filehandle?
• STDOUT filehandle: What Is a Filehandle?
• • Changing the Default Output Filehandle
• strict pragma: The strict Pragma
• string accumulator: The undef Value
• string comparison operators: Comparison Operators
• string concatenate operator (.): Binary Assignment Operators
• string escapes (see backslash escapes)
• string literals: Strings
• • double-quoted (see double-quoted string literals)
• string repetition operator (x): String Operators
• • Arrays and printf
• strings: Strings
• • Strings
  • Strings and Sorting
  • converted automatically to numbers: Automatic Conversion Between Numbers and Strings
  • finding substrings within: Finding a Substring with index
  • operators for: String Operators
  • • comparison operators for: Comparison Operators
• sub keyword: Defining a Subroutine
• subroutines: System and User Functions
• • anonymous: Anonymous Subroutines and Closures
  • calling: Invoking a Subroutine
  • defining: Defining a Subroutine
  • invoking: Invoking a Subroutine
  • lexical variables in: Private Variables in Subroutines
• subscripts: Accessing Elements of an Array
• substr operator: Manipulating a Substring with substr
• substrings: Finding a Substring with index
• subtraction operator (-): Numeric Operators
• support for Perl: How Can I Get Support for Perl?
• symbolic links: File Tests
• • The stat and lstat Functions
  • Links and Files
  • Links and Files
• symlink function: Links and Files
• syntax extensions: Syntax Extensions
• Sys::Hostname module: The Sys::Hostname Module
• system databases: Direct System Database Access
• system function: The system Function
• • using vs. exec function: The exec Function
• system functions: System and User Functions
• system time: The stat and lstat Functions
• System V IPC: System V IPC