But don't forget binary!

The version you wrote will work fine if you're running from a Unix client box to a Unix server.

But if the client side is a Win32, Mac, or VMS box (and maybe if the server side is) you want to make sure you call

$f->binary();
[download]

       The protocol also defines several standard translations
       which the file can undergo during transfer.  These are
       ASCII, EBCDIC, binary, and byte.  ASCII is the default
       type, and indicates that the sender of files will trans-
       late the ends of lines to a standard representation which
       the receiver will then translate back into their local
       representation.
[download]