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For ease of access, the Perl manual has been split up into several sections:
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perl Perl overview (this section)
perlfaq Perl frequently asked questions
perltoc Perl documentation table of contents
perlbook Perl book information
perlsyn Perl syntax
perldata Perl data structures
perlop Perl operators and precedence
perlsub Perl subroutines
perlfunc Perl builtin functions
perlreftut Perl references short introduction
perldsc Perl data structures intro
perlrequick Perl regular expressions quick start
perlpod Perl plain old documentation
perlstyle Perl style guide
perltrap Perl traps for the unwary
perlrun Perl execution and options
perldiag Perl diagnostic messages
perllexwarn Perl warnings and their control
perldebtut Perl debugging tutorial
perldebug Perl debugging
perlvar Perl predefined variables
perllol Perl data structures: arrays of arrays
perlopentut Perl open() tutorial
perlretut Perl regular expressions tutorial
perlre Perl regular expressions, the rest of the story
perlref Perl references, the rest of the story
perlform Perl formats
perlboot Perl OO tutorial for beginners
perltoot Perl OO tutorial, part 1
perltootc Perl OO tutorial, part 2
perlobj Perl objects
perlbot Perl OO tricks and examples
perltie Perl objects hidden behind simple variables
perlipc Perl interprocess communication
perlfork Perl fork() information
perlnumber Perl number semantics
perlthrtut Perl threads tutorial
perlport Perl portability guide
perllocale Perl locale support
perlunicode Perl unicode support
perlsec Perl security
perlmod Perl modules: how they work
perlmodlib Perl modules: how to write and use
perlmodinstall Perl modules: how to install from CPAN
perlnewmod Perl modules: preparing a new module for distribution
perlfaq1 General Questions About Perl
perlfaq2 Obtaining and Learning about Perl
perlfaq3 Programming Tools
perlfaq4 Data Manipulation
perlfaq5 Files and Formats
perlfaq6 Regexes
perlfaq7 Perl Language Issues
perlfaq8 System Interaction
perlfaq9 Networking
perlcompile Perl compiler suite intro
perlembed Perl ways to embed perl in your C or C++ application
perldebguts Perl debugging guts and tips
perlxstut Perl XS tutorial
perlxs Perl XS application programming interface
perlclib Internal replacements for standard C library functions
perlguts Perl internal functions for those doing extensions
perlcall Perl calling conventions from C
perlutil utilities packaged with the Perl distribution
perlfilter Perl source filters
perldbmfilter Perl DBM filters
perlapi Perl API listing (autogenerated)
perlintern Perl internal functions (autogenerated)
perlapio Perl internal IO abstraction interface
perltodo Perl things to do
perlhack Perl hackers guide
perlhist Perl history records
perldelta Perl changes since previous version
perl5005delta Perl changes in version 5.005
perl5004delta Perl changes in version 5.004
perlsolaris Perl notes for Solaris
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(If you're intending to read these straight through for the first time, the suggested order will tend to reduce the number of forward references.)
The manpages listed above are installed in the /usr/perl5/man/ directory.
Extensive additional documentation for Perl modules is available. This additional documentation is also in the /usr/local/lib/perl5/man directory. Some of this additional documentation is distributed as standard with Perl, but you'll also find documentation for any customer-installed third-party modules there.
Notice that running catman(1M) on the Perl manual pages is not supported. For other Solaris-specific details, see the NOTES section below.
You can also use the supplied /usr/perl5/bin/perldoc script to view Perl information.
If something strange has gone wrong with your program and you're not sure where you should look for help, try the -w switch first. It will often point out exactly where the trouble is.
Perl is a language optimized for scanning arbitrary text files, extracting information from those text files, and printing reports based on that information. It's also a good language for many system management tasks. The language is intended to be practical (easy to use, efficient, complete) rather than beautiful (tiny, elegant, minimal).
Perl combines (in the author's opinion, anyway) some of the best features of C, sed, awk, and sh, so people familiar with those languages should have little difficulty with it. (Language historians will also note some vestiges of csh, Pascal, and even BASIC-PLUS.) Expression syntax corresponds quite closely to C expression syntax. Unlike most Unix utilities, Perl does not arbitrarily limit the size of your data--if you've
got the memory, Perl can slurp in your whole file as a single string. Recursion is of unlimited depth. And the tables used by hashes (sometimes called "associative arrays") grow as necessary to prevent degraded performance. Perl can use sophisticated pattern matching techniques to scan large amounts of data quickly. Although optimized for scanning text, Perl can also deal with binary data, and can make dbm files look like hashes. Setuid Perl scripts are safer than C programs through a dataflow tracing
mechanism that prevents many stupid security holes.
If you have a problem that would ordinarily use sed or awk or sh, but it exceeds their capabilities or must run a little faster, and you don't want to write the silly thing in C, then Perl may be for you. There are also translators to turn your sed and awk scripts into Perl scripts.
But wait, there's more...
Begun in 1993 (see the perlhist man page), Perl version 5 is nearly a complete rewrite that provides the following additional benefits:
- o Modularity and reusability using innumerable modules
- Described in the perlmod man page, the perlmodlib man page, and the perlmodinstall man page.
- o Embeddable and Extensible
- Described in the perlembed man page, the perlxstut man page, the perlxs man page, the perlcall man page, the perlguts man page, and the xsubpp man page.
- o Roll-your-own magic variables
- (Including multiple simultaneous DBM implementations) Described in the perltie man page and the AnyDBM_File man page.
- o Subroutines can now be overridden,
- autoloaded, and prototyped. Described in the perlsub man page.
- o Arbitrarily nested data structures
- and anonymous functions. Described in the perlreftut man page, the perlref man page, the perldsc man page, and the perllol man page.
- o Object-oriented programming
- Described in the perlobj man page, the perltoot man page, and the perlbot man page.
- o Compilability into C code or Perl bytecode
- Described in the B man page and the B::Bytecode man page.
- o Support for light-weight processes (threads)
- Described in the perlthrtut man page and the Thread man page. Notice that the Perl shipped as part of Solaris does NOT have threads support enabled. If you require threads support, you should build and install your own Perl version (see the NOTES section below).
- o Support for internationalization, localization,
- and Unicode. Described in the perllocale man page and the utf8 man page.
- o Lexical scoping
- Described in the perlsub man page.
- o Regular expression enhancements
- Described in the perlre man page, with additional examples in the perlop man page.
- o Enhanced debugger and interactive Perl environment,
- with integrated editor support. Described in the perldebug man page.
- o POSIX 1003.1 compliant
- Described in the POSIX man page.
Okay, that's definitely enough hype.
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