PERL5

SEMINAR ON PERL5 : Larry Wall was released Perl 5 on october 17 in 1994. Almost everything was new in that release, including support for hard references, lexical scoping, subroutine references and closures, objects, modules and packages, and many new built-ins. And Perl 5 is still mostly compatible with Perl 4.
Perl 5.001 was introduced on March 13, 1995. Perl 5.002 was introduced on February 29, 1996 with the new prototypes feature. This allowed module authors to make subroutines that behaved like Perl builtins. Perl 5.003 was introduced June 25, 1996, as a security release.Perl 5.004 was introduced on May 15, 1997, which included among other things the UNIVERSAL package, giving Perl a base object to which all classes were automatically derived and the ability to require versions of modules. Another significant development was the inclusion of the CGI.pm module,which contributed to Perl's popularity as a CGI scripting language.
Perl 5.005 was introduced on July 22, 1998.Perl 5.6 was introduced on March 22, 2000.Perl 5.8 was first introduced on July 18, 2002, and had nearly yearly updates since then. The latest version of Perl 5.8 is 5.8.9, introduced December 14, 2008. Perl 5.8 upgraded unicode support, added a new IO implementation, added a new thread implementation, improved numeric accuracy, and added several new modules.

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