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PerlWatch# perl -h
Usage: perl [switches] [--] [programfile] [arguments]
  -0[octal]         specify record separator (\0, if no argument)
  -a                autosplit mode with -n or -p (splits $_ into @F)
  -C[number/list]   enables the listed Unicode features
  -c                check syntax only (runs BEGIN and CHECK blocks)
  -d[:debugger]     run program under debugger
  -D[number/list]   set debugging flags (argument is a bit mask or alphabets)
  -e program        one line of program (several -e's allowed, omit programfile)
  -E program        like -e, but enables all optional features
  -f                don't do $sitelib/sitecustomize.pl at startup
  -F/pattern/       split() pattern for -a switch (//'s are optional)
  -i[extension]     edit <> files in place (makes backup if extension supplied)
  -Idirectory       specify @INC/#include directory (several -I's allowed)
  -l[octal]         enable line ending processing, specifies line terminator
  -[mM][-]module    execute "use/no module..." before executing program
  -n                assume "while (<>) { ... }" loop around program
  -p                assume loop like -n but print line also, like sed
  -s                enable rudimentary parsing for switches after programfile
  -S                look for programfile using PATH environment variable
  -t                enable tainting warnings
  -T                enable tainting checks
  -u                dump core after parsing program
  -U                allow unsafe operations
  -v                print version, subversion (includes VERY IMPORTANT perl info)
  -V[:variable]     print configuration summary (or a single Config.pm variable)
  -w                enable many useful warnings (RECOMMENDED)
  -W                enable all warnings
  -x[directory]     strip off text before #!perl line and perhaps cd to directory
  -X                disable all warnings

See: perlrun for greater detail on Perl's switches, and options.

See Also

Overview:

Perl overview

Perl introduction for beginners

Perl documentation table of contents

Tutorials:

Perl references short introduction

Perl data structures intro

Perl data structures: arrays of arrays

Perl regular expressions quick start

Perl regular expressions tutorial

Perl OO tutorial for beginners

Perl OO tutorial, part 1

Perl OO tutorial, part 2

Perl OO tricks and examples

Perl Performance and Optimization Techniques

Perl style guide

Perl cheat sheet

Perl traps for the unwary

Perl debugging tutorial

Perl frequently asked questions (Perl FAQ)

General Questions About Perl

Obtaining and Learning about Perl

Programming Tools

Data Manipulation

Files and Formats

Regexes (RE’s)

Perl Language Issues

System Interaction

Networking

Reference Manual:

Perl syntax

Perl data structures

Perl operators and precedence

Perl subroutines

Perl built-in functions

Perl open() tutorial

Perl pack() and unpack() tutorial

Perl plain old documentation

Perl plain old documentation format specification

Perl execution and options

Perl diagnostic messages

Perl warnings and their control

Perl debugging

Perl predefined variables

Perl regular expressions, the rest of the story

Perl regular expression backslash sequences

Perl regular expression character classes

Perl regular expressions quick reference

Perl references, the rest of the story

Perl formats

Perl objects

Perl objects hidden behind simple variables

Perl DBM filters

Perl InterProcess Communication

Perl fork() information

Perl number semantics

Perl threads tutorial

Perl modules: how they work

Perl modules: how to write and use

Perl modules: how to write modules with style

Perl modules: how to install from CPAN

Perl modules: preparing a new module for distribution

Perl modules: writing a user pragma

utilities packaged with the Perl distribution

Perl compiler suite intro

Perl source filters

Perl Glossary

Internals, and C Language Interface:

Perl ways to embed perl in your C or C++ application

Perl debugging guts and tips

Perl XS application programming interface

Internal replacements for standard C library functions

Perl internal functions for those doing extensions

Perl calling conventions from C

Perl method resolution plugin interface

Perl regular expression plugin interface

Perl regular expression engine internals

Perl API listing (autogenerated)

Perl internal functions (autogenerated)

C API for Perl's implementation of IO in Layers

Perl internal IO abstraction interface

Perl hackers guide