1. Online Counseling Resource YCMOU ELearning Drive… School of Architecture, Science and Technology Yashwantrao Chavan Maharashtra Open University, Nashik – 422222, India

2. OC-SBI083-U01-02 Introduction Programmes and Courses  SBI083-CP1_U01_02

3. School of Science and Technology, Online Counseling Resource… Credits  Academic Inputs by Sonali Alkari MSc (Botany), P.G. D.C. Bio-Informatics sonalisa_alkari@yahoo.com

4. School of Science and Technology, Online Counseling Resource… © 2007, YCMOU. All Rights Reserved.4 How to Use This Resource  Counselor at each study center should use this presentation to deliver lecture of 40-60 minutes during Face-To-Face counseling.  Discussion about students difficulties or tutorial with assignments should follow the lecture for about 40-60 minutes.  Handouts (with 6 slides on each A4 size page) of this presentation should be provided to each student.  Each student should discuss on the discussion forum all the terms which could not be understood. This will improve his writing skills and enhance knowledge level about topics, which shall be immensely useful for end exam.  Appear several times, for all the Self-Tests, available for this course.  Student can use handouts for last minutes preparation just before end exam.

5. School of Science and Technology, Online Counseling Resource… © 2007, YCMOU. All Rights Reserved.5 Learning Objectives  After studying this module, you should be able to: State history of perl and its devlopmental phases. Explain sources of perl avalibility. Download Perl Install perl on your computer.

6. School of Science and Technology, Online Counseling Resource… Perl Overview : 1  Perl is a stable, cross platform programming language.  It is used for mission critical projects in the public and private sectors.  Perl is Open Source software, licensed under its Artistic License, or the GNU General Public License (GPL).Open Sourcelicensed Artistic LicenseGNU General Public License (GPL)  Perl was created by Larry Wall.  Perl 1.0 was released to usenet's alt.comp.sources in 1987

7. School of Science and Technology, Online Counseling Resource… Perl Overview :2  PC Magazine named Perl a finalist for its 1998 Technical Excellence Award in the Development Tool category.  Perl is listed in the Oxford English Dictionary. Oxford English Dictionary

8. School of Science and Technology, Online Counseling Resource… History of Perl :1  Perl has gone through much growth and change over the course of its nearly 15-year life.  Author for perl programme are Larry Wall and a large groups of cohorts.  The authors published new versions periodically.  These new versions have been carefully designed to support most programs written under old versions, but occasionally some major features are added that don’t work with older versions of perl.

9. School of Science and Technology, Online Counseling Resource… History:2  Perl borrows features from a variety of other languages including C, shell scripting (sh), AWK, sed and Lisp.Cshell scriptingshAWK sedLisp  Perl was widely adopted for its strengths in text processing and lack of the arbitrary limitations of many scripting languages at the time.scripting languages  Perl was originally named "Pearl", after the Parable of the Pearl from the Gospel of Matthew.Parable of the PearlGospel of Matthew  The name is occasionally given as "PERL" (for Practical Extraction and Report Language).

10. School of Science and Technology, Online Counseling Resource… Perl: Availability:1  Perl is free software, and is licensed under both the Artistic License and the GNU General Public License. Distributions are available for most operating systems.free software Artistic LicenseGNU General Public License Distributionsoperating systems  It is particularly prevalent on Unix and Unix-like systems, but it has been ported to most modern (and many obsolete) platforms.UnixUnix-like  With only six reported exceptions, Perl can be compiled from source code on all Unix-like.source code  POSIX-compliant or otherwise Unix-compatible platforms. POSIX  Because of unusual changes required for the Mac OS Classic environment, a special port called MacPerl was shipped independently.Mac OS Classic

11. School of Science and Technology, Online Counseling Resource… Perl: Availability:2  Many computers-especially Unix and Linux computers- come with Perl already installed.  On unix and Linux, type the following at a command prompt: $ perl-V  If perl is already installed, we get message on machine: This is Perl, VS 6.1 built for i686- linux copyright 1987-2001, Larry Wall  If perl isn’t installed, we get meassage like this: Perl: command not found.  The CPAN carries a complete list of supported platforms with links to the distributions available on each.

12. School of Science and Technology, Online Counseling Resource… Perl: Availability:3  By use of Zip drive or CD Perl software program can be brought to your Computer.  There are commercial shrink –wrapped CDs of Perl available from several sources such as local software store.  Several books such as O’Reilly’s Perl Resource Kits include CDs with perl.

13. School of Science and Technology, Online Counseling Resource… Windows Perl  Users of Microsoft Windows typically install one of the native binary distributions of Perl for Win32, most commonly ActivePerl.Microsoft WindowsActivePerl  Compiling Perl from source code under Windows is possible, but most installations lack the requisite C compiler and build tools.source code  This also makes it hard to install modules from the CPAN, particularly those that are partially written in C.

14. School of Science and Technology, Online Counseling Resource… Downloading  Perl downloading and installing on computer is same as installing any other application.  The web site that serves as a central jumping off point for all things in perl is http://www.perl.com/. http://www.perl.com/  The main page has a Downloads clickable button that guides you to everything you need to install perl on your computer.

15. School of Science and Technology, Online Counseling Resource… Installation  Downloading and installing Perl is usually quite easy, here are the basic steps for installing Perl on computer. 1.Check to see if Perl is already insatlled; if so check that version is at least Perl 5. 2.Get Internet access and go to the perl home page at http://www.perl.com/.http://www.perl.com/ 3.Go to the download pages and determine which distribution of Perl to download. 4.Download the correct Perl disribution. 5.Install the distributtion on your computer.

16. School of Science and Technology, Online Counseling Resource… Unix or Linux based Perl Program  On Unix or Linux perl programs run from the command line.  The first line of my Perl programs is #!/ usr/bin/perl  The program can executable using Chmod program.

17. School of Science and Technology, Online Counseling Resource… Macs based Perl Program  On Macs,, the recommended way to save Perl programs is as “droplet”.  The MacPerl documentation gives the simple instruction.  Basically, perl program is open with MacPerl application and then option save as is choosen, and in the next step option Droplet is choosen

18. School of Science and Technology, Online Counseling Resource… Windows based Perl Program  On window system, perl is usually associated with the filename extension.pl with perl programs.  This is done as part of the perl installation process, which modifies the registry setting to include this file association.  Windows has a PATH variable specifying folders in which the system looks for programs.  The path is modified by Perl installation process to include the path to the path applicaton, usually c:\perl.

19. School of Science and Technology, Online Counseling Resource… What You Learn…  You have learnt : History of perl Perl availability Downloading and installation of perl Window perl, unix,linux based perl and Macs based Perl Program

20. School of Science and Technology, Online Counseling Resource… Critical Thinking Questions 1.Is perl behave uniformly on different operating systems? 2.State the differences in different operating systems perl. © 2007, YCMOU. All Rights Reserved.20

21. School of Science and Technology, Online Counseling Resource… Hints For Critical Thinking Question 1.Perl Availability Downloading and installation of perl 1.Window perl, unix,linux based perl and Macs based Perl Program © 2007, YCMOU. All Rights Reserved.21

22. School of Science and Technology, Online Counseling Resource… Study Tips:Books  Beginning Perl by Simon Cozens, Peter Wainwright. 700 pages. Wrox Press Inc. (May 25, 2000). Beginning Perl  Impatient Perl by Greg London (Feb 7, 2004). Extreme Perl by Robert Nagler Impatient Perl Extreme Perl  MacPerl: Power & Ease by Vicky Brown and Chris Nandor. 372 pages. (1998). MacPerl: Power & Ease  Picking Up Perl by Bradley M. Kuhn and Neil Smyth. self published. second edition. (July 2005). Picking Up Perl

23. School of Science and Technology, Online Counseling Resource… Study Tips:Web Resources www.en.wikipedia.org Microsoft Encarta Encyclopedia http://www.perl.org/ http://en.wikibooks.org/wiki/Programming:Perl_Websites http://cpan.perl.org/

24. School of Science and Technology, Online Counseling Resource… Community Web Sites  Planet Perl - an aggregation of selected perl journals Planet Perl  use Perl; - read community news and personal journals, or start your own journal use Perl;  Perl Monks - the wisdom of the Monks can guide you on your Perl Quests Perl Monks  perl.org - your current location perl.org  the Perl Apprenticeship Site the Perl Apprenticeship Site

25. School of Science and Technology, Online Counseling Resource… End of the Presentation Thank You