What is cat?

[Camilo Gonzalez]

I see the word 'cat' being used an awful lot lately here and have
encountered it in other readings. What is cat and what is it used for?

#!/usr/local/bin/perl
print <<'         EOF'
         Camilo Gonzalez
         Web Developer
         Taylor Johnson Associates        
          [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> 
          www.taylorjohnson.com <http://www.taylorjohnson.com/> 
         EOF