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Perl is an acronym for Practical Extraction and Report Language.

The language is Perl

The interpreter is perl

It's not PERL or pearl (was original name though)..

It was designed by Larry Wall as a tool for writing programs in the UNIX environment.

Perl is largely used by system admins.. for monitoring,network tools,batch jobs, working with filesystems etc..

CGI perl is widely used for creating web pages...

The Perl motto is "there's more than one way to do it"

Simplest perl program

The simplest Perl program you can write is a one-line program that you run from the command line.

$ perl -e "print 'Hello, world!';"

Once you have typed this line and pressed enter, the following text is displayed on the screen: Hello, world!

perl cgi

The Common Gateway Interface (CGI) is a standard for interfacing external applications with information servers, such as HTTP or Web servers. A plain HTML document that the Web daemon retrieves is static, which means it exists in a constant state: a text file that doesn't change. A CGI program, on the other hand, is executed in real-time, so that it can output dynamic information. more on perl cgi

mod_perl

mod_perl brings together the full power of the perl programming language and the Apache HTTP server. You can use Perl to manage Apache, respond to requests for web pages and much more.

Strawberry Perl

It is a community-developed distribution of Perl for Windows machines. It includes all of the tools necessary to configure, build, and install additional Perl libraries from the CPAN

Active Perl

ActiveState offers commercial support for ActivePerl, along with its own repository of popular CPAN distributions

When to use my or local .. find more

Error handling in perl..how to capture errors.. more...

Parrot is a virtual machine designed to efficiently compile and execute bytecode for dynamic languages. Parrot currently hosts a variety of language implementations in various stages of completion, including Tcl, Javascript, Ruby, Lua, Scheme, PHP, Python, Perl 6, APL, and a .NET bytecode translator. Parrot is not about parrots, though we are rather fond of them for obvious reasons. see... parrot.org

What do I need to learn Perl?

You don't need to pay a penny to learn and use Perl. Basically, a text editor that handles text-only files and a working installation of the Perl interpreter are all that you will need.

Under Microsoft Windows, Notepad meets the minimum requirement.

If you are using one of the mainstream operating systems, the perl interpreter can be downloaded from the download section of perl.com. perl.com is the ofcial Web site for the Perl language and you can find the download links to all available interpreter versions there.

For Windows users, most probably you should download the Activestate distribution of Perl. It is very easy to install.