root@zetawiki:~# echo 'hello' | pv
6B 0:00:00 [ 217kB/s] [<=> ]
root@zetawiki:~# pv -V
pv 1.2.0 - Copyright(C) 2010 Andrew Wood <firstname.lastname@example.org>
Web site: http://www.ivarch.com/programs/pv.shtml
This program is free software, and is being distributed under the
terms of the Artistic License 2.0.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.