PERL102 - Basic Perl and CGI

This is the second in a three part series of courses on Perl and CGI:

PERL101 - Introduction to Perl
PERL102 - Basic Perl and CGI
PERL103 - Perl, Forms, and CGI

This course covers the basics of the Perl programming language, with an introduction to the Common Gateway Interface, or CGI, that is the interface between a web server and code used to generate dynamic content. It assumes that PERL101 was taken as a prerequisite. This course reviews some of the concepts introducted in PERL101 and expands on them, as well as introducing more of the Perl language. The course outline is as follows:

Introduction
Variables
- Scalar Variables
- Arrays
- Lists
- Hashes
- File Handles
- Scope - my, our, local
- Special Variables - $_,$/, etc..
Printing
- The print Function
- The printf Function
Strings
- chomp and chop
- length
- sprintf
- substr
- Case - uc, lc, ucfirst, lcfirst
- Character Substitution and Pattern Matching
  - =~
  - s/// - Substitution
  - m/// - Matching
  - tr/// - Transliteration
- The split function
File and directory related functions
- Directory Functions
  - chdir
  - mkdir
  - rmdir
  - opendir
  - readdir
  - closedir
  - File Tests
- File functions
  - open
  - eof
  - <>
  - close
  - unlink
  - rename
Introduction to CGI
- Before writing to a page...
- Environment Variables
Summary

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