perl: intro advising common support requirements

Listed platforms are: common enterprise servers (my best guess)
and the top 3 linux web hosts according to W3Techs respectively.

diff --git a/perl.inc.pl b/perl.inc.pl
index e412578209caab87326d4553c2b37f435669259e..87684652975ff4f49b0c1c6a3cf9a9393212db0c 100644 (file)
--- a/perl.inc.pl
+++ b/perl.inc.pl
@@ -21,8 +21,8 @@ use utf8;
                release => '2000-03-23',
                distro => {
                        debian => 'woody',
-                       redhat => '2.1',
-                       solaris => '9', # 2002-05 eol 2014-10
+                       rhel => '2', # v5.6.0; also in red hat 7.0
+                       solaris => '9', # v5.6.1; 2002-05 eol 2014-10
                },
                unicode => '3.0.1',
        },
@@ -40,8 +40,9 @@ use utf8;
                release => '2002-07-18',
                distro => {
                        debian => 'sarge',
-                       redhat => '3.9',
+                       rhel => '3', # v5.8.0; v5.8.8 in RHEL6 (2007-2014)
                        solaris => '10', # v5.8.4; 2005-01 eol 2021-01
+                       centos => '3-5', # v5.8.0 in v3 (2004-03); v5.8.8 in v5 (eol 2017-03)
                },
                unicode => '3.2.0',
        },
@@ -59,7 +60,8 @@ use utf8;
                release => '2007-12-18',
                distro => {
                        debian => 'lenny',
-                       redhat => '6.5',
+                       rhel => '6', # v5.10.1
+                       centos => '6', # v5.10.1 (2011-07 eol 2020-11)
                },
                unicode => '5.0.0',
        },
@@ -104,7 +106,8 @@ use utf8;
                ],
                release => '2012-05-20',
                distro => {
-                       redhat => '7.0',
+                       rhel => '7', # v5.16.3
+                       centos => '7', # v5.16.3 (2014-07 eol 2024-06)
                },
                unicode => '6.1',
        },

diff --git a/perl.plp b/perl.plp
index e199ddd2e2908d0a0aeb6fa2f1506eaeee7c061d..8ebf5e2f522ebc01d6e53a812b9ba910ae252fb5 100644 (file)
--- a/perl.plp
+++ b/perl.plp
@@ -14,6 +14,12 @@ Html({
 :>
 <h1>Perl cheat sheets</h1>
 
+<p>The most significant features introduced for each version of the Perl scripting language.
+Depending on desired compatibility you'll want to support a minimum of
+<span title="on stable/enterprise platforms such as Solaris 10, RHEL 3, SLES 8">v5.8</span> or
+<span title="on up-to-date servers such as Debian wheezy, Ubuntu 12.04, CentOS 7">v5.14</span>.
+</p>
+
 <:
 my $info = do 'perl.inc.pl' or die $@ // $!;
 for my $vernum (reverse sort keys %{$info}) {