barcode(3) on Linux
The text 06640be60232, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 3.1 (Sarge), Debian 3.0 (Woody) shipped it. The page shows this text now.
a library to create and print bar codes