String manipulation & file I/O

I have a text file full of thousands of md5 hashes from around the interwebs but they are seperated with newlines.

I need to open the txt hash file, and write to another file but replacing every newline with nothing.

Possible languages: Perl, C++ or Visual Basic 6.

every program here is overkill anyway
do{s/\n//g and print}while <>