if (-e "data/$file.data") || (-e "data/$otherfile.data") 
{
	print " <BR>Hooray at least one of the the files exists";	
}

else {
	print "<BR>Hohum neither of the files exist";
}

##</code><code>##

if (-e "data/$file.data") or (-e "data/$otherfile.data") 
{
	print " <BR>Hooray one of the files exist";	
}

else {
	print "<BR>Hohum neither of the files exist";
}