Unix shell file copy flattening folder structure

Question

On the UNIX bash shell (specifically Mac OS X Leopard) what would be the simplest way to copy every file having a specific extension from a folder hierarchy (including subdirect

Answer 1

The only problem with Magnus' solution is that it forks off a new "cp" process for every file, which is not terribly efficient especially if there is a large number of files.

On Linux (or other systems with GNU coreutils) you can do:

find . -name "*.xml" -print0 | xargs -0 echo cp -t a

(The -0 allows it to work when your filenames have weird characters -- like spaces -- in them.)

Unfortunately I think Macs come with BSD-style tools. Anyone know a "standard" equivalent to the "-t" switch?