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Index: P

changing, in formats : 11.6.4. Changing the Page Length
default, for top-of-page format : 11.5. The Top-of-Page Format

page position, changing, in formats : 11.6.5. Changing the Position on the Page

param( )

19.4. Passing Parameters via CGI
19.7. Other Form Elements

parameters : 1.5.9. Making It a Bit More Modular

passing via CGI : 19.4. Passing Parameters via CGI

parent process : 14.4. Using fork

parentheses

array literals and : 3.2. Literal Representation

as optional for the keys( ) operator : 5.4.1. The keys Function

chdir( ) operator and : 12.1. Moving Around the Directory Tree

forcing array context with : 3.4.1. Assignment

as memory in regular expressions

7.3.4. Precedence
7.3.2.3. Parentheses as memory

precedence and

2.4.3. Operator Precedence and Associativity
7.3.4. Precedence

print( ) operator and : 6.3.1. Using print for Normal Output

values( ) operator and : 5.4.2. The values Function

password file

accessing

7.7. Exercises
16.1. Getting Password and Group Information

random access in : 16.1. Getting Password and Group Information

reading from, example : 10.4. Using Filehandles

sequential access to : 16.1. Getting Password and Group Information

PATH environment variable, managing : 14.1. Using system and exec

Pathologically Eclectic Rubbish Lister : 1.1. History of Perl

percent sign (%)

as modulus operator : 2.4.1. Operators for Numbers

Perl : 19.10. Perl and the Web: Beyond CGI Programming

availability of : 1.3. Availability
CGI programming : (see CGI programs)

Perl programs, making executable : 1.4. Basic Concepts

Perl standard library : 6.2. Input from the Diamond Operator

Perl: The Motion Picture : 16.2. Packing and Unpacking Binary Data

permission bits, in dbmopen( ) : 17.2. Opening and Closing DBM Hashes

permissions

CGI programs and

19.8. Creating a Guestbook Program
19.9. Troubleshooting CGI Programs

modifying : 13.5. Modifying Permissions

pi

computing with : A.1. Chapter 2, Scalar Data
obscure reference to : 16.2. Packing and Unpacking Binary Data

pop( ) operator : 3.4.3. The push and pop Functions

example of : A.3. Chapter 4, Control Structures

popen library function, emulating : 14.3. Using Processes as Filehandles

popup menus

19.7. Other Form Elements
19.7.1. References

powers of ten, example of, with substr( ) : 15.2. Extracting and Replacing a Substring

Practical Extraction and Report Language

1.1. History of Perl
11.1. What Is a Format?

precedence : 2.4.3. Operator Precedence and Associativity

parentheses and

2.4.3. Operator Precedence and Associativity
7.3.4. Precedence

in regular expressions : 7.3.4. Precedence

print( ) operator

2.8. Output with print

6.3.1. Using print for Normal Output

$_ and : 4.5. The foreach Statement

array literals and : 3.2. Literal Representation

example of

1.5.1. The "Hello, World" Program
1.5.17. The Final Programs

filehandle keyword and : 1.5.12. Warning Someone When Things Go Astray

return value of : 6.3.1. Using print for Normal Output

writes to the same filehandle : 11.5. The Top-of-Page Format

printenv command, emulating : 14.1. Using system and exec

printf( ) operator : 6.3.2. Using printf for Formatted Output

example of

A.3. Chapter 4, Control Structures
A.5. Chapter 6, Basic I/O
A.13. Chapter 14, Process Management
4.6. Exercises

processes

creating : 14.1. Using system and exec
exit value : 14.4. Using fork
filehandles as : 14.3. Using Processes as Filehandles
launching : 14.5. Summary of Process Operations
opening for writing with filehandle : 14.3. Using Processes as Filehandles

products, finding : 9.4. Labeled Blocks

prompt, example of : 1.5.2. Asking Questions and Remembering the Result

publishing systems : 19.10.1. Custom Publishing Systems

push( ) operator : 3.4.3. The push and pop Functions

example of : A.15. Chapter 16, System Database Access

pwd command : 12.1. Moving Around the Directory Tree

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