Home Man
Today's Posts

Linux & Unix Commands - Search Man Pages

RedHat 9 (Linux i386) - man page for perlfaq2 (redhat section 1)

PERLFAQ2(1)			 Perl Programmers Reference Guide		      PERLFAQ2(1)

       perlfaq2 - Obtaining and Learning about Perl ($Revision: 1.17 $, $Date: 2002/11/16
       23:33:08 $)

       This section of the FAQ answers questions about where to find source and documentation for
       Perl, support, and related matters.

       What machines support Perl?  Where do I get it?

       The standard release of Perl (the one maintained by the perl development team) is distrib-
       uted only in source code form.  You can find this at http://www.cpan.org/src/latest.tar.gz
       , which is in a standard Internet format (a gzipped archive in POSIX tar format).

       Perl builds and runs on a bewildering number of platforms.  Virtually all known and cur-
       rent Unix derivatives are supported (Perl's native platform), as are other systems like
       VMS, DOS, OS/2, Windows, QNX, BeOS, OS X, MPE/iX and the Amiga.

       Binary distributions for some proprietary platforms, including Apple systems, can be found
       http://www.cpan.org/ports/ directory.  Because these are not part of the standard distri-
       bution, they may and in fact do differ from the base Perl port in a variety of ways.
       You'll have to check their respective release notes to see just what the differences are.
       These differences can be either positive (e.g. extensions for the features of the particu-
       lar platform that are not supported in the source release of perl) or negative (e.g.
       might be based upon a less current source release of perl).

       How can I get a binary version of Perl?

       If you don't have a C compiler because your vendor for whatever reasons did not include
       one with your system, the best thing to do is grab a binary version of gcc from the net
       and use that to compile perl with.  CPAN only has binaries for systems that are terribly
       hard to get free compilers for, not for Unix systems.

       Some URLs that might help you are:


       Someone looking for a Perl for Win16 might look to Laszlo Molnar's djgpp port in
       http://www.cpan.org/ports/#msdos , which comes with clear installation instructions.  A
       simple installation guide for MS-DOS using Ilya Zakharevich's OS/2 port is available at
       http://www.cs.ruu.nl/%7Epiet/perl5dos.html and similarly for Windows 3.1 at
       http://www.cs.ruu.nl/%7Epiet/perlwin3.html .

       I don't have a C compiler on my system.	How can I compile perl?

       Since you don't have a C compiler, you're doomed and your vendor should be sacrificed to
       the Sun gods.  But that doesn't help you.

       What you need to do is get a binary version of gcc for your system first.  Consult the
       Usenet FAQs for your operating system for information on where to get such a binary ver-

       I copied the Perl binary from one machine to another, but scripts don't work.

       That's probably because you forgot libraries, or library paths differ.  You really should
       build the whole distribution on the machine it will eventually live on, and then type
       "make install".	Most other approaches are doomed to failure.

       One simple way to check that things are in the right place is to print out the hard-coded
       @INC that perl looks through for libraries:

	   % perl -e 'print join("\n",@INC)'

       If this command lists any paths that don't exist on your system, then you may need to move
       the appropriate libraries to these locations, or create symbolic links, aliases, or short-
       cuts appropriately.  @INC is also printed as part of the output of

	   % perl -V

       You might also want to check out "How do I keep my own module/library directory?" in perl-

       I grabbed the sources and tried to compile but gdbm/dynamic loading/malloc/linking/...
       failed.	How do I make it work?

       Read the INSTALL file, which is part of the source distribution.  It describes in detail
       how to cope with most idiosyncrasies that the Configure script can't work around for any
       given system or architecture.

       What modules and extensions are available for Perl?  What is CPAN?  What does CPAN/src/...

       CPAN stands for Comprehensive Perl Archive Network, a ~1.2Gb archive replicated on nearly
       200 machines all over the world.  CPAN contains source code, non-native ports, documenta-
       tion, scripts, and many third-party modules and extensions, designed for everything from
       commercial database interfaces to keyboard/screen control to web walking and CGI scripts.
       The master web site for CPAN is http://www.cpan.org/ and there is the CPAN Multiplexer at
       http://www.cpan.org/CPAN.html which will choose a mirror near you via DNS.  See
       http://www.perl.com/CPAN (without a slash at the end) for how this process works. Also,
       http://mirror.cpan.org/ has a nice interface to the http://www.cpan.org/MIRRORED.BY mirror

       See the CPAN FAQ at http://www.cpan.org/misc/cpan-faq.html for answers to the most fre-
       quently asked questions about CPAN including how to become a mirror.

       CPAN/path/... is a naming convention for files available on CPAN sites.	CPAN indicates
       the base directory of a CPAN mirror, and the rest of the path is the path from that direc-
       tory to the file.  For instance, if you're using ftp://ftp.funet.fi/pub/lan-
       guages/perl/CPAN as your CPAN site, the file CPAN/misc/japh is downloadable as
       ftp://ftp.funet.fi/pub/languages/perl/CPAN/misc/japh .

       Considering that there are close to two thousand existing modules in the archive, one
       probably exists to do nearly anything you can think of.	Current categories under
       CPAN/modules/by-category/ include Perl core modules; development support; operating system
       interfaces; networking, devices, and interprocess communication; data type utilities;
       database interfaces; user interfaces; interfaces to other languages; filenames, file sys-
       tems, and file locking; internationalization and locale; world wide web support; server
       and daemon utilities; archiving and compression; image manipulation; mail and news; con-
       trol flow utilities; filehandle and I/O; Microsoft Windows modules; and miscellaneous mod-

       See http://www.cpan.org/modules/00modlist.long.html or http://search.cpan.org/ for a more
       complete list of modules by category.

       CPAN is not affiliated with O'Reilly and Associates.

       Is there an ISO or ANSI certified version of Perl?

       Certainly not.  Larry expects that he'll be certified before Perl is.

       Where can I get information on Perl?

       The complete Perl documentation is available with the Perl distribution.  If you have Perl
       installed locally, you probably have the documentation installed as well: type "man perl"
       if you're on a system resembling Unix.  This will lead you to other important man pages,
       including how to set your $MANPATH.  If you're not on a Unix system, access to the docu-
       mentation will be different; for example, documentation might only be in HTML format.  All
       proper Perl installations have fully-accessible documentation.

       You might also try "perldoc perl" in case your system doesn't have a proper man command,
       or it's been misinstalled.  If that doesn't work, try looking in /usr/local/lib/perl5/pod
       for documentation.

       If all else fails, consult http://perldoc.cpan.org/ or http://www.perldoc.com/ both offer
       the complete documentation in html format.

       Many good books have been written about Perl--see the section below for more details.

       Tutorial documents are included in current or upcoming Perl releases include perltoot for
       objects or perlboot for a beginner's approach to objects, perlopentut for file opening
       semantics, perlreftut for managing references, perlretut for regular expressions,
       perlthrtut for threads, perldebtut for debugging, and perlxstut for linking C and Perl
       together.  There may be more by the time you read this.	The following URLs might also be
       of assistance:


       What are the Perl newsgroups on Usenet?	Where do I post questions?

       The now defunct comp.lang.perl newsgroup has been superseded by the following groups:

	   comp.lang.perl.announce	       Moderated announcement group
	   comp.lang.perl.misc		       Very busy group about Perl in general
	   comp.lang.perl.moderated	       Moderated discussion group
	   comp.lang.perl.modules	       Use and development of Perl modules
	   comp.lang.perl.tk		       Using Tk (and X) from Perl

	   comp.infosystems.www.authoring.cgi  Writing CGI scripts for the Web.

       There is also a Usenet gateway to Perl mailing lists sponsored by perl.org at
       nntp://nntp.perl.org , a web interface to the same lists at http://nntp.perl.org/group/
       and these lists are also available under the "perl.*" hierarchy at
       http://groups.google.com . Other groups are listed at http://lists.perl.org/ ( also known
       as http://lists.cpan.org/ ).

       A nice place to ask questions is the PerlMonks site, http://www.perlmonks.org/

       Note that none of the above are supposed to write your code for you: asking questions
       about particular problems or general advice is fine, but asking someone to write your code
       for free is not very cool.

       Where should I post source code?

       You should post source code to whichever group is most appropriate, but feel free to
       cross-post to comp.lang.perl.misc.  If you want to cross-post to alt.sources, please make
       sure it follows their posting standards, including setting the Followup-To header line to
       NOT include alt.sources; see their FAQ ( http://www.faqs.org/faqs/alt-sources-intro/ ) for

       If you're just looking for software, first use Google ( http://www.google.com ), Google's
       usenet search interface ( http://groups.google.com ),  and CPAN Search (
       http://search.cpan.org ).  This is faster and more productive than just posting a request.

       Perl Books

       A number of books on Perl and/or CGI programming are available.	A few of these are good,
       some are OK, but many aren't worth your money.  Tom Christiansen maintains a list of these
       books, some with extensive reviews, at http://www.perl.com/perl/critiques/index.html .

       The incontestably definitive reference book on Perl, written by the creator of Perl, is
       now (July 2000) in its third edition:

	   Programming Perl (the "Camel Book"):
	       by Larry Wall, Tom Christiansen, and Jon Orwant
	       0-596-00027-8  [3rd edition July 2000]
	   (English, translations to several languages are also available)

       The companion volume to the Camel containing thousands of real-world examples, mini-tuto-
       rials, and complete programs is:

	   The Perl Cookbook (the "Ram Book"):
	       by Tom Christiansen and Nathan Torkington,
		   with Foreword by Larry Wall
	       ISBN 1-56592-243-3 [1st Edition August 1998]

       If you're already a seasoned programmer, then the Camel Book might suffice for you to
       learn Perl from.  If you're not, check out the Llama book:

	   Learning Perl (the "Llama Book")
	       by Randal L. Schwartz and Tom Phoenix
	       ISBN 0-596-00132-0 [3rd edition July 2001]

       If you're not an accidental programmer, but a more serious and possibly even degreed com-
       puter scientist who doesn't need as much hand-holding as we try to provide in the Llama,
       please check out the delightful book

	   Perl: The Programmer's Companion
	       by Nigel Chapman
	       ISBN 0-471-97563-X [1997, 3rd printing Spring 1998]
	       http://www.wiley.com/compbooks/chapman/perl/perltpc.html (errata etc)

       If you are more at home in Windows the following is available (though unfortunately rather

	   Learning Perl on Win32 Systems (the "Gecko Book")
	       by Randal L. Schwartz, Erik Olson, and Tom Christiansen,
		   with foreword by Larry Wall
	       ISBN 1-56592-324-3 [1st edition August 1997]

       Addison-Wesley ( http://www.awlonline.com/ ) and Manning ( http://www.manning.com/ ) are
       also publishers of some fine Perl books such as Object Oriented Programming with Perl by
       Damian Conway and Network Programming with Perl by Lincoln Stein.

       An excellent technical book discounter is Bookpool at http://www.bookpool.com/ where a 30%
       discount or more is not unusual.

       What follows is a list of the books that the FAQ authors found personally useful.  Your
       mileage may (but, we hope, probably won't) vary.

       Recommended books on (or mostly on) Perl follow.

	       Programming Perl
		   by Larry Wall, Tom Christiansen, and Jon Orwant
		   ISBN 0-596-00027-8 [3rd edition July 2000]

	       Perl 5 Pocket Reference
	       by Johan Vromans
		   ISBN 0-596-00032-4 [3rd edition May 2000]

	       Perl in a Nutshell
	       by Ellen Siever, Stephan Spainhour, and Nathan Patwardhan
		   ISBN 1-56592-286-7 [1st edition December 1998]

	       Elements of Programming with Perl
		   by Andrew L. Johnson
		   ISBN 1-884777-80-5 [1st edition October 1999]

	       Learning Perl
		   by Randal L. Schwartz and Tom Phoenix
		   ISBN 0-596-00132-0 [3rd edition July 2001]

	       Learning Perl on Win32 Systems
		   by Randal L. Schwartz, Erik Olson, and Tom Christiansen,
		       with foreword by Larry Wall
		   ISBN 1-56592-324-3 [1st edition August 1997]

	       Perl: The Programmer's Companion
		   by Nigel Chapman
		   ISBN 0-471-97563-X [1997, 3rd printing Spring 1998]
	       http://www.wiley.com/compbooks/chapman/perl/perltpc.html (errata etc)

	       Cross-Platform Perl
		   by Eric Foster-Johnson
		   ISBN 1-55851-483-X [2nd edition September 2000]

	       MacPerl: Power and Ease
		   by Vicki Brown and Chris Nandor,
		       with foreword by Matthias Neeracher
		   ISBN 1-881957-32-2 [1st edition May 1998]

	       The Perl Cookbook
		   by Tom Christiansen and Nathan Torkington
		       with foreword by Larry Wall
		   ISBN 1-56592-243-3 [1st edition August 1998]

	       Effective Perl Programming
		   by Joseph Hall
		   ISBN 0-201-41975-0 [1st edition 1998]

       Special Topics
	       Mastering Regular Expressions
		   by Jeffrey E. F. Friedl
		   ISBN 1-56592-257-3 [1st edition January 1997]

	       Network Programming with Perl
		   by Lincoln Stein
		   ISBN 0-201-61571-1 [1st edition 2001]

	       Object Oriented Perl
		   Damian Conway
		       with foreword by Randal L. Schwartz
		   ISBN 1-884777-79-1 [1st edition August 1999]

	       Data Munging with Perl
		   Dave Cross
		   ISBN 1-930110-00-6 [1st edition 2001]

	       Mastering Perl/Tk
		   by Steve Lidie and Nancy Walsh
		   ISBN 1-56592-716-8 [1st edition January 2002]

       Perl in Magazines

       The first (and for a long time, only) periodical devoted to All Things Perl, The Perl
       Journal contains tutorials, demonstrations, case studies, announcements, contests, and
       much more.  TPJ has columns on web development, databases, Win32 Perl, graphical program-
       ming, regular expressions, and networking, and sponsors the Obfuscated Perl Contest and
       the Perl Poetry Contests.  As of mid-2001, the dead tree version of TPJ will be published
       as a quarterly supplement of SysAdmin magazine ( http://www.sysadminmag.com/ ) For more
       details on TPJ, see http://www.tpj.com/

       Beyond this, magazines that frequently carry quality articles on Perl are The Perl Review
       ( http://www.theperlreview.com ), Unix Review ( http://www.unixreview.com/ ), Linux Maga-
       zine ( http://www.linuxmagazine.com/ ), and Usenix's newsletter/magazine to its members,
       login: ( http://www.usenix.org/ )

       The Perl columns of Randal L. Schwartz are available on the web at http://www.stone-
       henge.com/merlyn/WebTechniques/ , http://www.stonehenge.com/merlyn/UnixReview/ , and
       http://www.stonehenge.com/merlyn/LinuxMag/ .

       Perl on the Net: FTP and WWW Access

       To get the best performance, pick a site from the list at http://www.cpan.org/SITES.html .
       From there you can find the quickest site for you.

       You may also use xx.cpan.org where "xx" is the 2-letter country code for your domain; e.g.
       Australia would use au.cpan.org. [Note: This only applies to countries that host at least
       one mirror.]

       What mailing lists are there for Perl?

       Most of the major modules (Tk, CGI, libwww-perl) have their own mailing lists.  Consult
       the documentation that came with the module for subscription information.

       A comprehensive list of Perl related mailing lists can be found at:


       Archives of comp.lang.perl.misc

       The Google search engine now carries archived and searchable newsgroup content.


       If you have a question, you can be sure someone has already asked the same question at
       some point on c.l.p.m. It requires some time and patience to sift through all the content
       but often you will find the answer you seek.

       Where can I buy a commercial version of Perl?

       In a real sense, Perl already is commercial software: it has a license that you can grab
       and carefully read to your manager. It is distributed in releases and comes in well-
       defined packages. There is a very large user community and an extensive literature.  The
       comp.lang.perl.*  newsgroups and several of the mailing lists provide free answers to your
       questions in near real-time.  Perl has traditionally been supported by Larry, scores of
       software designers and developers, and myriad programmers, all working for free to create
       a useful thing to make life better for everyone.

       However, these answers may not suffice for managers who require a purchase order from a
       company whom they can sue should anything go awry.  Or maybe they need very serious hand-
       holding and contractual obligations.  Shrink-wrapped CDs with Perl on them are available
       from several sources if that will help.	For example, many Perl books include a distribu-
       tion of Perl, as do the O'Reilly Perl Resource Kits (in both the Unix flavor and in the
       proprietary Microsoft flavor); the free Unix distributions also all come with Perl.

       Alternatively, you can purchase commercial incidence based support through the Perl
       Clinic.	The following is a commercial from them:

       "The Perl Clinic is a commercial Perl support service operated by ActiveState Tool Corp.
       and The Ingram Group.  The operators have many years of in-depth experience with Perl
       applications and Perl internals on a wide range of platforms.

       "Through our group of highly experienced and well-trained support engineers, we will put
       our best effort into understanding your problem, providing an explanation of the situa-
       tion, and a recommendation on how to proceed."

       Contact The Perl Clinic at


	   North America Pacific Standard Time (GMT-8)
	   Tel:    1 604 606-4611 hours 8am-6pm
	   Fax:    1 604 606-4640

	   Europe (GMT)
	   Tel:    00 44 1483 862814
	   Fax:    00 44 1483 862801

       See also www.perl.com for updates on tutorials, training, and support.

       Where do I send bug reports?

       If you are reporting a bug in the perl interpreter or the modules shipped with Perl, use
       the perlbug program in the Perl distribution or mail your report to perlbug@perl.org .

       If you are posting a bug with a non-standard port (see the answer to "What platforms is
       Perl available for?"), a binary distribution, or a non-standard module (such as Tk, CGI,
       etc), then please see the documentation that came with it to determine the correct place
       to post bugs.

       Read the perlbug(1) man page (perl5.004 or later) for more information.

       What is perl.com? Perl Mongers? pm.org? perl.org? cpan.org?

       The Perl Home Page at http://www.perl.com/ is currently hosted by The O'Reilly Network, a
       subsidiary of O'Reilly and Associates.

       Perl Mongers is an advocacy organization for the Perl language which maintains the web
       site http://www.perl.org/ as a general advocacy site for the Perl language.

       Perl Mongers uses the pm.org domain for services related to Perl user groups, including
       the hosting of mailing lists and web sites.  See the Perl user group web site at
       http://www.pm.org/ for more information about joining, starting, or requesting services
       for a Perl user group.

       Perl Mongers also maintain the perl.org domain to provide general support services to the
       Perl community, including the hosting of mailing lists, web sites, and other services.
       The web site http://www.perl.org/ is a general advocacy site for the Perl language, and
       there are many other sub-domains for special topics, such as


       http://www.cpan.org/ is the Comprehensive Perl Archive Network, a replicated worlwide
       repository of Perl software, see the What is CPAN? question earlier in this document.

       Copyright (c) 1997-2001 Tom Christiansen and Nathan Torkington.	All rights reserved.

       This documentation is free; you can redistribute it and/or modify it under the same terms
       as Perl itself.

       Irrespective of its distribution, all code examples here are in the public domain.  You
       are permitted and encouraged to use this code and any derivatives thereof in your own pro-
       grams for fun or for profit as you see fit.  A simple comment in the code giving credit to
       the FAQ would be courteous but is not required.

perl v5.8.0				    2003-02-18				      PERLFAQ2(1)

All times are GMT -4. The time now is 11:58 PM.

Unix & Linux Forums Content Copyrightę1993-2018. All Rights Reserved.
Show Password