pfsout(1) on Linux
The text 119311042cc6, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it. The page shows this text now.
Read pfs frames from stdin and write them in the format determined by the extension of the file name