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1 Perl is Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
2 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
3 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 by Larry Wall and others.
4 All rights reserved.
8 ABOUT PERL
11 Perl is a general-purpose programming language originally developed for
12 text manipulation and now used for a wide range of tasks including
13 system administration, web development, network programming, GUI
14 development, and more.
16 The language is intended to be practical (easy to use, efficient,
17 complete) rather than beautiful (tiny, elegant, minimal). Its major
18 features are that it's easy to use, supports both procedural and
19 object-oriented (OO) programming, has powerful built-in support for text
20 processing, and has one of the world's most impressive collections of
21 third-party modules.
23 For an introduction to the language's features, see pod/perlintro.pod.
25 For a discussion of the important changes in this release, see
28 There are also many Perl books available, covering a wide variety of topics,
29 from various publishers. See pod/perlbook.pod for more information.
35 If you're using a relatively modern operating system and want to
36 install this version of Perl locally, run the following commands:
38 ./Configure -des -Dprefix=$HOME/localperl
39 make test
40 make install
42 This will configure and compile perl for your platform, run the regression
43 tests, and install perl in a subdirectory "localperl" of your home directory.
45 If you run into any trouble whatsoever or you need to install a customized
46 version of Perl, you should read the detailed instructions in the "INSTALL"
47 file that came with this distribution. Additionally, there are a number of
48 "README" files with hints and tips about building and using Perl on a wide
49 variety of platforms, some more common than others.
51 Once you have Perl installed, a wealth of documentation is available to you
52 through the 'perldoc' tool. To get started, run this command:
54 perldoc perl
57 IF YOU RUN INTO TROUBLE
60 Perl is a large and complex system that's used for everything from
61 knitting to rocket science. If you run into trouble, it's quite
62 likely that someone else has already solved the problem you're
63 facing. Once you've exhausted the documentation, please report bugs to us
64 at the GitHub issue tracker at https://github.com/Perl/perl5/issues
66 While it was current when we made it available, Perl is constantly evolving
67 and there may be a more recent version that fixes bugs you've run into or
68 adds new features that you might find useful.
70 You can always find the latest version of perl on a CPAN (Comprehensive Perl
71 Archive Network) site near you at https://www.cpan.org/src/
73 If you want to submit a simple patch to the perl source, see the "SUPER
74 QUICK PATCH GUIDE" in pod/perlhack.pod.
76 Just a personal note: I want you to know that I create nice things like this
77 because it pleases the Author of my story. If this bothers you, then your
78 notion of Authorship needs some revision. But you can use perl anyway. :-)
80 The author.
86 This program is free software; you can redistribute it and/or modify
87 it under the terms of either:
89 a) the GNU General Public License as published by the Free
90 Software Foundation; either version 1, or (at your option) any
91 later version, or
93 b) the "Artistic License" which comes with this Kit.
95 This program is distributed in the hope that it will be useful,
96 but WITHOUT ANY WARRANTY; without even the implied warranty of
97 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See either
98 the GNU General Public License or the Artistic License for more details.
100 You should have received a copy of the Artistic License with this
101 Kit, in the file named "Artistic". If not, I'll be glad to provide one.
103 You should also have received a copy of the GNU General Public License
104 along with this program in the file named "Copying". If not, write to the
105 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
106 Boston, MA 02110-1301, USA or visit their web page on the internet at
109 For those of you that choose to use the GNU General Public License,
110 my interpretation of the GNU General Public License is that no Perl
111 script falls under the terms of the GPL unless you explicitly put
112 said script under the terms of the GPL yourself. Furthermore, any
113 object code linked with perl does not automatically fall under the
114 terms of the GPL, provided such object code only adds definitions
115 of subroutines and variables, and does not otherwise impair the
116 resulting interpreter from executing any standard Perl script. I
117 consider linking in C subroutines in this manner to be the moral
118 equivalent of defining subroutines in the Perl language itself. You
119 may sell such an object file as proprietary provided that you provide
120 or offer to provide the Perl source, as specified by the GNU General
121 Public License. (This is merely an alternate way of specifying input
122 to the program.) You may also sell a binary produced by the dumping of
123 a running Perl script that belongs to you, provided that you provide or
124 offer to provide the Perl source as specified by the GPL. (The
125 fact that a Perl interpreter and your code are in the same binary file
126 is, in this case, a form of mere aggregation.) This is my interpretation
127 of the GPL. If you still have concerns or difficulties understanding
128 my intent, feel free to contact me. Of course, the Artistic License
129 spells all this out for your protection, so you may prefer to use that.