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Index: P

• pack function: Manipulating Data with pack and unpack
• packages: Packages
• parameter lists: Arguments
• • empty: Empty Parameter Lists
  • variable-length: Variable-length Parameter Lists
• parent processes, managing: Process Management
• parentheses
• • file tests and: File Tests
  • grouping patterns with: Grouping in Patterns
  • indicating precedence: Operator Precedence and Associativity
  • optional use of: The pop and push Operators
  • • with print function: Output to Standard Output
  • with memory function: Memory Parentheses
• partial-evaluation operators: Control Structures Using Partial-Evaluation Operators
• password databases (Unix): Direct System Database Access
• PATH environment variable: The Environment Variables
• pattern match operator (m//): Matches with m//
• patterns: What Are Regular Expressions?
• • What Are Regular Expressions?
  • Using Simple Patterns
  • manpages for: And There's More
  • split operator and: The split Operator
  • test program for: Pattern Test Program
• percent sign (%): Formatted Output with printf
• • indicating conversion: Formatted Output with printf
  • indicating entire hash: The Hash as a Whole
  • printing: Formatted Output with printf
• performance, slowed by automatic match variables: The Automatic Match Variables
• period (see dot)
• Perl: What Does "Perl" Stand For?
• • advanced techniques for: Some Advanced Perl Techniques
  • bugs in: How Can I Get Support for Perl?
  • • reporting: What If I Find a Bug in Perl?
  • converting other developing languages to: Converting Other Languages to Perl
  • current trends in: What's Happening with Perl Now?
  • documentation for: Are There Any Other Kinds of Support?
  • • Further Documentation
  • libraries and modules for: Extending Perl's Functionality
  • licenses for: How Can I Get Perl?
  • mailing lists and newsgroups for: Are There Any Other Kinds of Support?
  • obtaining: How Can I Get Perl?
  • portability and: Why Are There So Many Footnotes?
  • • Is Perl Easy or Hard?
  • reasons for using/not using: What's Perl Really Good For?
  • security and: Security
  • • The Common Gateway Interface (CGI)
  • support for: How Can I Get Support for Perl?
• Perl identifiers: Scalar Variables
• Perl Monastery: Are There Any Other Kinds of Support?
• perlboot manpage, object-oriented developing and: Object-Oriented Developing
• perlbug utility: What If I Find a Bug in Perl?
• perldata manpage, here documents and: Here documents
• perldebug manpage: Debugging
• perldiag manpage: What's Inside That Program?
• • errors and: Trapping Errors with eval
  • warnings explained in: Perl's Built-in Warnings
• perldoc command: Whirlwind Tour of Perl
• perldoc manpage: Further Documentation
• perldsc manpage, data structures and: Complex Data Structures
• perlfaq manpage: The elsif Clause
• • Further Documentation
• perlfork manpage: Threads and Forking
• perlform manpage, formats and: Formats
• perlfunc manpage: The Naked Block Control Structure
• • format letters and: Manipulating Data with pack and unpack
  • grep operator and: map and grep
  • map operator and: map and grep
  • mathematical functions and: Advanced Math Functions
  • operators and: Other Operators and Functions
  • splice operator and: The splice Operator
  • System V IPC and: System V IPC
  • vec operator and: Bits and Pieces
• perlipc manpage: Getting Down and Dirty with Fork
• perlipc module, System V IPC and: System V IPC
• perllexwarn manpage: Perl's Built-in Warnings
• perllocale manpage: Locales and Unicode
• perllol manpage, data structures and: Complex Data Structures
• perlmod manpage
• • syntax extensions and: Syntax Extensions
  • writing modules and: Writing Your Own Modules
• perlmodinstall manpage: Finding and Installing Modules
• perlmodlib manpage
• • pragmas and: Pragmas
  • writing modules and: Writing Your Own Modules
• perlobj manpage, object-oriented developing and: Object-Oriented Developing
• perlop manpage
• • bitwise operators and: Using Bitstrings
  • operators and: Other Operators and Functions
• perlopentut manpage, filehandles and: More Ways to Open Filehandles
• perlpod manpage: Embedded Documentation
• perlport manpage, standard input/output and: What Is a Filehandle?
• perlre manpage: And There's More
• • Regular expressions
• perlref manpage, references and: References
• perlreftut manpage, references and: References
• perlrequick manpage: And There's More
• • Regular expressions
• perlretut manpage: And There's More
• • Regular expressions
• perlrun manpage, command-line options and: In-place Editing from the Command Line
• • Command-Line Options
• perlsec manpage: Security
• perlsyn manpage: The for Control Structure
• • continue block and: The next Operator
  • syntax extensions and: Syntax Extensions
• perlthrtut manpage: Threads and Forking
• perltie manpage, tied variables and: Tied Variables
• perltoc manpage: Further Documentation
• perlvar manpage, builtin variables and: Built in Variables
• permissions
• • changing: Modifying Permissions
  • Unix and: Removing Files
• pipe (|): What Is a Filehandle?
• • processes and: Processes as Filehandles
• plain-old documentation format: Embedded Documentation
• plus sign (+), as quantifier: Simple Quantifiers
• pod format: Embedded Documentation
• pointers (C developing language): References
• pop operator: The pop and push Operators
• portability: Why Are There So Many Footnotes?
• • Is Perl Easy or Hard?
  • modules and: The File::Spec Module
• POSIX module: The POSIX Module
• • math functions and: Advanced Math Functions
• postincrements/postdecrements: The Value of Autoincrement
• pound sign (#) in comments: What's Inside That Program?
• Practical Extraction and Report Language (see Perl)
• pragmas: The use strict Pragma
• • Pragmas
  • integer: All Numbers Are the Same Format Internally
• precedence: Operator Precedence and Associativity
• • Precedence
  • partial-evaluation operators and: Control Structures Using Partial-Evaluation Operators
  • table of: Operator Precedence and Associativity
• preincrements/predecrements: The Value of Autoincrement
• print function: Output with print
• • databases records and: Fixed-length Random-access Databases
  • filehandles and: Using Filehandles
  • newlines and: Output to Standard Output
  • optional parentheses and: Output to Standard Output
  • output and: Output to Standard Output
• printf function: Formatted Output with printf
• • filehandles and: Using Filehandles
• private variables (see lexical variables)
• processes
• • as filehandles: Processes as Filehandles
  • managing: Process Management
• developing: How Do I Make a Perl Program?
• • The else Clause with unless
  • automatic match variables and: The Automatic Match Variables
  • text editor for: How Do I Make a Perl Program?
• developing languages
• • C, operators and: The Ternary Operator, ?:
  • converting to Perl: Converting Other Languages to Perl
  • low-level vs. high-level: Why Didn't Larry Just Use Some Other Language?
  • structured: Loop Controls
• Developing Perl: Why Didn't Larry Just Use Some Other Language?
• • as documentation for Perl: Are There Any Other Kinds of Support?
• programs: The last Operator
• • example of tutorial: Whirlwind Tour of Perl
  • exit status and: Fatal Errors with die
  • last operator for exiting early: The last Operator
  • name of
  • • die function and: Fatal Errors with die
    • warn function and: Warning Messages with warn
  • running over the Web: But How Do I Compile Perl?
• prototypes: Omitting the Ampersand
• push operator: The pop and push Operators