Shell Programming and Scripting

Im new to using perl scripting, and i was wondering if anyone could help me, I need to create a cgi file that when it runs it opens a file looks through all the words, and replace the word hello with goodbye, ive been looking around and someone said to use an If statement, but ive found no other site that explains how to open a file, create a new file and save the converted text to it. if anyone could help me it would be greatly appreciated. the code the person provided is :

Code:

if($line =~ /MatchText/){
    $line =~ s/ReplaceMe/REPLACED/gi;
}

I understand how this works, i just dont know how to create the rest of the file.

if anyone could explain the process of creating this file, or knows a good place with a tutorial would be verry much appreciated.

There are tons of tutorials out there, I think what you need is a push in the right direction.

Perl can open a file for reading, writing or both (this is a simplification, there's no need for the pedants out there to point this out.) It uses the concept of file handles to do so.

I'd suggest a google search for:

perl file handles
perl open file reading
perl open file writing

You're also going to use a while loop to read the file, so I'd suggest reading up on that too.

HTH, post again with more specific questions.

Then you have not put much effort into using a search engine to find some useful information.

google:

perl find and replace text in a file - Google Search