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Index: P

p command (debugger) : 8.1.1. Debugger Commands

-p file test operator : 2.5.10. Named Unary and File Test Operators

-p switch, perl : 6.1.2. Switches

-P switch, perl : 6.1.2. Switches

pack function : 3.2.105. pack

package declaration

3.2.106. package
5.1. Packages

package variables : (see global, variables)

packages

(see also modules)

5. Packages, Modules, and Object Classes

5.1.3. Autoloading

7. The Standard Perl Library

BEGIN and END subentries : 5.1.2. Package Constructors and Destructors: BEGIN and END

binding variables to : 3.2.184. untie

blessing objects into : 3.2.9. bless

declaring

2.6.8. Scoped Declarations
3.2.106. package

importing semantics to : 3.2.185. use

names for : 8.4. Programming with Style

tying variables to : 3.2.171. tie

packed sockaddr : 3.2.54. getpeername

page numbers : 2.9.2. Per-Filehandle Special Variables

pages : 2.9.2. Per-Filehandle Special Variables

pairs, key/value : (see hashes)

paragraph mode

2.9.3. Global Special Variables
6.1.2. Switches

paragraphs, wrapping text into : 7.2.71. Text::Wrap - Wrap Text into a Paragraph

parent classes : 5.3.1. Brief Refresher on Object-Oriented Programming

parent processes : (see processes)

parentheses : (see () (parentheses))

parse file specifications : 7.2.27. File::Basename - Parse File Specifications

ParseWords module : 7.2.68. Text::ParseWords - Parse Text into a List of Tokens

"passes-the-buck-to" relationship : 5.5.11. Delegation (the "Passes-the-Buck-to" Relationship)

passing

reference : 2.7.2. Passing References
symbol table entries : 2.7.1. Passing Symbol Table Entries (Typeglobs)

passwd file : (see /etc/passwd file)

passwords : 3.2.158. srand

crypt function and : 3.2.22. crypt

patches : 8.5.3. Patches

PATH environment variable

6.1.2. Switches
6.3.1.2. Cleaning up your path

Path module : 7.2.31. File::Path - Create or Remove a Series of Directories

pathname, current working directory : 7.2.7. Cwd - Get Pathname of Current Working Directory

pattern-matching operator : 1.7. Regular Expressions

patterns

(see also m// (match) operator; m?? (match) operator)

(see also regular expressions)

1.7. Regular Expressions

2.4. Pattern Matching

3.2.1. /PATTERN/

embedded modifiers for : 2.4.1.4. Regular expression extensions

greedy matching

1.7.1. Quantifiers
2.4.1.2. The rules of regular expression matching

matching precedence : 2.4.1.2. The rules of regular expression matching

minimal matching : 1.7.2. Minimal Matching

quantifiers : 2.4.1.2. The rules of regular expression matching

special variables for matching : 2.9.1. Regular Expression Special Variables

split function and : 3.2.155. split

study function : 3.2.160. study

for untainting data : 6.3.1.1. Detecting and laundering tainted data

pausing scripts : 3.2.150. sleep

Penguin module : 6.3.2.2. Penguin

percent sign (%) : (see % (percent sign))

performance

8.3. Efficiency
Perl in a Nutshell
measuring : 3.2.174. times

period : (see . (dot))

Perl

extensions to : (see extensions, Perl)
history of : 8.7. History Made Practical
obtaining : How to Get Perl

Perl 4 (and before) : 8.2.7. Previous Perl Traps

perl interpreter program

1.3.1. How to Do It

6.1.2. Switches

-- switch : 6.1.2. Switches

-0 switch : 6.1.2. Switches

-a switch

2.9.4. Global Special Arrays
6.1.2. Switches

-c switch : 6.1.2. Switches

-D switch : 6.1.2. Switches

-d switch

6.1.2. Switches
8.1. The Perl Debugger
8.1.8. Alternative Debuggers: The Perl Profiler

-e switch : 6.1.2. Switches

-e switch : 1.3.1. How to Do It

-F switch : 6.1.2. Switches

-h switch : 6.1.2. Switches

-i switch : 6.1.2. Switches

-I switch : 6.1.2. Switches

-l switch : 6.1.2. Switches

-m switch : 6.1.2. Switches

-M switch : 6.1.2. Switches

-n switch : 6.1.2. Switches

-P switch : 6.1.2. Switches

-p switch : 6.1.2. Switches

-S switch

6.1.2. Switches
6.2.4.2. UNIX-domain clients and servers

-s switch : 6.1.2. Switches

sticky bit : 8.3.1. Time Efficiency

-T switch

6.1.2. Switches
6.2.4.1. Internet TCP clients and servers
6.3.1. Handling Insecure Data

-U switch : 6.1.2. Switches

-u switch : 6.1.2. Switches

-V switch : 6.1.2. Switches

-v switch : 6.1.2. Switches

-w switch

1.3.1. How to Do It
3. Functions
6.1.2. Switches
7.2.10. diagnostics - Force Verbose Warning Diagnostics
9. Diagnostic Messages

-x switch

6.1.1. Command Processing
6.1.2. Switches

Perl Profiler : 8.1.8. Alternative Debuggers: The Perl Profiler

Perl standard library : 7. The Standard Perl Library

PERL5DB variable : 8.1.3. Debugger Customization

PERL_DESTRUCT_LEVEL variable : 5.3.9. A Note on Garbage Collection

$PERL_VERSION : (see $ variables, $] variable)

$PERLDB : (see $ variables, $^P variable)

.perldb file : 8.1.3. Debugger Customization

perldoc command : Perl Manpages

permissions

3.2.165. sysopen
3.2.179. umask

permissions, file

changing : 3.2.12. chmod

pi : 3.2.6. atan2

picture lines

2.8. Formats
3.2.41. format

pid : (see processes)

$PID : (see $ variables, $$ variable)

Ping module : 7.2.46. Net::Ping - Check Whether a Host Is Online

pingecho() : 7.2.46. Net::Ping - Check Whether a Host Is Online

pipe function : 3.2.107. pipe

pipe symbol : (see | (vertical bar))

pipes : 6.2.2. Pipes

closing : 3.2.18. close

pluralities : (see arrays)

plus : (see + (plus sign))

Pod::Text module : 7.2.50. Pod::Text - Convert POD Data to Formatted ASCII Text

poetry in Perl : 8.6. Perl Poetry

pop function : 3.2.108. pop

port

getting name from number : 3.2.64. getservbyname
getting number from name : 3.2.64. getservbyname

porting, efficiency of : 8.3.5. Porter Efficiency

pos function : 3.2.109. pos

positive lookahead assertion : 2.4.1.4. Regular expression extensions

POSIX module : 7.2.49. POSIX - Perl Interface to IEEE Std 1003.1

$POSTMATCH : (see $ variables, $' variable)

pound sign : (see # (sharp))

pragmas

2.6.7. Global Declarations
2.6.9. Pragmas
3.2.185. use
5. Packages, Modules, and Object Classes
6.1.2. Switches
7. The Standard Perl Library
modules and : 5.2. Modules

pre-extending arrays : 8.3.1. Time Efficiency

precedence

3. Functions
8.2.7. Previous Perl Traps
diagnostic messages : 9. Diagnostic Messages
key/value pair (hashes) : 2.3.5. Hashes (Associative Arrays)
logical operators : 2.5.20. Logical and, or, not, and xor
operator, table of : 2.5. Operators
regular expression matching : 2.4.1.2. The rules of regular expression matching

$PREMATCH : (see $ variables, $` variable)

prepending

directories to @INC : 6.1.2. Switches
elements to arrays : 3.2.183. unshift

print function

3.2.110. print
8.2.3. Awk Traps
8.3.1. Time Efficiency

printf function

3.2.111. printf
3.2.156. sprintf
8.3.1. Time Efficiency

printing

multidimensional arrays

4.6.3. Access and Printing
4.7.1.3. Access and printing of an array of arrays
4.7.2.3. Access and printing of a hash of arrays
4.7.3.3. Access and printing of an array of hashes

multidimensional hashes : 4.7.4.3. Access and printing of a hash of hashes

nested data structures : 8.1.1. Debugger Commands

priority, process : 3.2.141. setpriority

private variables : (see local, variables)

procedures : 1.2.2. Verbs

process group

3.2.55. getpgrp
3.2.140. setpgrp

process ID (pid)

getting process group from : 3.2.55. getpgrp
returning : 3.2.56. getppid
returning with fork : 3.2.40. fork

$PROCESS_ID : (see $ variables, $$ variable)

processes

error handling poermission for : 7.2.40. IPC::Open3 - Open a Process for Reading, Writing, and Error Handling
fork function : 3.2.40. fork
getting group for : 3.2.140. setpgrp
ID (pid) : 3.2.102. open
interprocess communication (IPC) : 6.2. Cooperating with Other Processes
killing : 3.2.80. kill
named pipes : 6.2.2.4. Named pipes
priority, setting : 3.2.141. setpriority
read/write permission for : 7.2.39. IPC::Open2 - Open a Process for Both Reading and Writing
returning priority of : 3.2.57. getpriority
umask for : 3.2.179. umask
variables for : 2.9.3. Global Special Variables
waiting for : 3.2.189. wait
zombie : 6.2.1. Signals

processing shell commands : 6.1.1. Command Processing

program generators : 6.4.1. Program Generation

$PROGRAM_NAME : (see $ variables, $0 variable)

programming style : 8.4. Programming with Style

programs

core dump of : 3.2.29. dump
executing : 3.2.167. system
exiting : 3.2.35. exit

protocols

name-number translations

3.2.58. getprotobyname
3.2.59. getprotobynumber

prototypes : 2.7.3. Prototypes

pseudo-literals : (see input, operators)

purging : (see deleting)

push function : 3.2.112. push

put function : 7.2.8.5. Using the Berkeley DB interface directly

pwd command (UNIX) : 8.3.1. Time Efficiency

PWD environment variable : 7.2.7. Cwd - Get Pathname of Current Working Directory

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