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Perl & CGI tutorials
 ::   Intro to Perl/CGI and HTML Forms
 ::   Intro to Windows Perl
 ::   Intro to Perl 5
 ::   Intro to Perl
 ::   Intro to Perl Taint mode
 ::   Sherlock Holmes and the Case of the Broken CGI Script
 ::   Writing COM Components in Perl

Java tutorials
 ::   Intro to Java
 ::   Cross Browser Java

Misc technical tutorials
 ::   Intro to The Web Application Development Environment
 ::   Introduction to XML
 ::   Intro to Web Design
 ::   Intro to Web Security
 ::   Databases for Web Developers
 ::   UNIX for Web Developers
 ::   Intro to Adobe Photoshop
 ::   Web Programming 101
 ::   Introduction to Microsoft DNA

Misc non-technical tutorials
 ::   Misc Technopreneurship Docs
 ::   What is a Webmaster?
 ::   What is the open source business model?
 ::   Technical writing
 ::   Small and mid-sized businesses on the Web

Offsite tutorials
 ::   ISAPI Perl Primer
 ::   Serving up web server basics
 ::   Introduction to Java (Parts 1 and 2) in Slovak


Introduction to UNIX for Web Developers
The "diff" Utility  
Like the "sort" utility, the "diff" utility is a very useful command for manipulating files. The "diff" command allows you to compare files to see if there are any differences between them. This is particularly useful when cleaning up your directory tree or familiarizing yourself with a directory you have not been to in a long time. Note that the "diff3" command allows you to compare three files at once but we will not go over that here.


As you would expect, the diff utility comes with a useful option

Option Explanation
-b Ignores white spaces. Thus,
hello     world
is considered the same as
hello world

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