Sick Unix Trick #347 ... ghost files.
# Open the file, creating it
open $fh, '+>', 'foo.txt';
# Immediately unlink the file ... it will remain
# until you close the filehandle, then disappear
# Put something in it to test
print $fh "Foo\n";
# Rewind to the start of the temp file
seek $fh, 0, 0;
# Read it back in and see what you have
$in = <$fh>;
print "Read: $in\n";
# You don't even *have* to remember to close it,
# but it is a good habit ...
Updated: Note that unlike File::Temp, this trick will clean up after itself no matter what happens to the process. It does not depend upon DESTROY being invoked.
The intelligent reader will judge for himself. Without examining the facts fully and fairly, there is no way of knowing whether vox populi is really vox dei, or merely vox asinorum. — Cyrus H. Gordon