Symbols | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Explanatory note

P

p command (debugger) : Debugger Commands
-p file test operator : Named Unary and File Test Operators
-P switch, perl : Switches
-p switch, perl : Switches
pack function : pack
package declaration package Packages
package variables (see global variables)
packages Packages, Modules, and Object Classes The Standard Perl Library BEGIN and END subentries : Package Constructors and Destructors: BEGIN and END binding variables to : untie blessing objects into : bless declaring Scoped Declarations package importing semantics to : use names for : Programming with Style tying variables to : tie
packed sockaddr : getpeername
page numbers : Per-Filehandle Special Variables
pages : Per-Filehandle Special Variables
pairs, key/value (see hashes)
paragraph mode : Switches
paragraphs, wrapping text into : Text::Wrap--Wrap Text into a Paragraph
parent classes : Brief Refresher on Object-Oriented Programming
parent processes (see processes)
parentheses (see ( ))
parse file specifications : File::Basename--Parse File Specifications
ParseWords module : Text::ParseWords--Parse Text into a List of Tokens
"passes-the-buck-to" relationship : Delegation (the "Passes-the-Buck-to" Relationship)
passing reference : Passing References symbol table entries : Passing Symbol Table Entries (Typeglobs)
passwd file (see /etc/passwd file)
passwords : srand crypt function and : crypt
patches : Patches
PATH environment variable Switches Cleaning up your path
Path module : File::Path--Create or Remove a Series of Directories
pathname, current working directory : Cwd--Get Pathname of Current Working Directory
pattern-matching operator : Regular Expressions
patterns (see also regular expressions) Pattern Matching embedded modifiers for : Regular expression extensions greedy matching Quantifiers The rules of regular expression matching matching precedence : The rules of regular expression matching minimal matching : Minimal Matching quantifiers : The rules of regular expression matching special variables for matching : Regular Expression Special Variables split function and : split study function : study for untainting data : Detecting and laundering tainted data
pausing scripts : sleep
Penguin module : Penguin
percent sign (%) (see % (percent sign))
performance Perl in a Nutshell Efficiency measuring : times
period (see dot)
Perl (see extensions, Perl) extensions to (see extensions, Perl)
Perl 4 (and before) : Previous Perl Traps
perl interpreter program How to Do It Switches -a switch Global Special Arrays Switches -c switch : Switches -D switch : Switches -d switch Switches The Perl Debugger Alternative Debuggers: The Perl Profiler -e switch How to Do It Switches -F switch : Switches -h switch : Switches -i switch : Switches -I switch : Switches -l switch : Switches -m switch : Switches -M switch : Switches -n switch : Switches -P switch : Switches -p switch : Switches -s switch : Switches -S switch Switches UNIX-domain clients and servers sticky bit : Time Efficiency -T switch Switches Internet TCP clients and servers Handling Insecure Data -U switch : Switches -u switch : Switches -V switch : Switches -v switch : Switches -w switch How to Do It Functions Switches diagnostics--Force Verbose Warning Diagnostics Diagnostic Messages -x switch Command Processing Switches - - switch : Switches -0 switch : Switches
Perl Profiler : Alternative Debuggers: The Perl Profiler
Perl standard library : The Standard Perl Library
Perl, history of : History Made Practical
Perl, obtaining : How to Get Perl
PERL5DB variable : Debugger Customization
$PERLDB (see $^P variable)
.perldb file : Debugger Customization
perldoc command : Perl Manpages
PERL_DESTRUCT_LEVEL variable : A Note on Garbage Collection
$PERL_VERSION (see $] variable)
permissions sysopen umask
permissions, file changing : chmod
pi : atan2
picture lines Formats format
$PID (see $$ variable)
pid (see processes)
pid (process ID) getting process group : setpgrp
Ping module : Net::Ping--Check Whether a Host Is Online
pingecho( ) : Net::Ping--Check Whether a Host Is Online
pipe function : pipe
pipe symbol (see |)
pipes : Pipes closing : close
pluralities (see arrays)
plus (see +)
Pod: :Text module : Pod::Text--Convert POD Data to Formatted ASCII Text
poetry in Perl : Perl Poetry
pop function : pop
port getting name from number : getservbyname getting number from name : getservbyname
porting, efficiency of : Porter Efficiency
pos function : pos
positive lookahead assertion : Regular expression extensions
POSIX module : POSIX--Perl Interface to IEEE Std 1003.1
$POSTMATCH (see $' variable)
pound sign (see #)
pragmas Global Declarations Pragmas use Packages, Modules, and Object Classes Switches The Standard Perl Library modules and : Modules
pre-extending arrays : Time Efficiency
precedence Functions Previous Perl Traps diagnostic messages : Diagnostic Messages key/value pair (hashes) : Hashes (Associative Arrays) logical operators : Logical and, or, not, and xor operator, table of : Operators regular expression matching : The rules of regular expression matching
$PREMATCH (see $` variable)
prepending directories to @INC : Switches
prepending elements to arrays : unshift
print function print Awk Traps Time Efficiency
printf function printf sprintf Time Efficiency
printing multidimensional arrays Access and Printing Access and printing of an array of arrays Access and printing of a hash of arrays Access and printing of an array of hashes multidimensional hashes : Access and printing of a hash of hashes nested data structures : Debugger Commands
priority, process : setpriority
private variables (see local variables)
procedures : Verbs
process returning priority of : getpriority
process group getpgrp setpgrp
process ID (pid) getting process group from : getpgrp returning : getppid returning with fork : fork
processes error handling poermission for : IPC::Open3--Open a Process for Reading, Writing, and Error Handling fork function : fork getting group for : setpgrp ID (pid) : open interprocess communication (IPC) : Cooperating with Other Processes killing : kill named pipes : Named pipes priority, setting : setpriority read/write permission for : IPC::Open2--Open a Process for Both Reading and Writing umask for : umask variables for : Global Special Variables waiting for : wait zombie : Signals
processing shell commands : Command Processing
$PROCESS_ID (see $$ variable)
program generators : Program Generation
programming style : Programming with Style
programs core dump of : dump executing : system exiting : exit
$PROGRAM_NAME (see $0 variable)
protocol name getting from protocol number : getprotobyname
protocols name-number translations : getprotobynumber
prototypes : Prototypes
pseudo-literals (see input operators)
purging (see deleting)
push function : push
put function : Using the Berkeley DB interface directly
pwd command (UNIX) : Time Efficiency
PWD environment variable : Cwd--Get Pathname of Current Working Directory Symbols | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z Explanatory note Copyright © 1997 O'Reilly & Associates, Inc. All Rights Reserved.