dpipe(1) on Linux
The text 852603485359, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
bi-directional pipe command
Flags it lists
-
--daemon -
--nowrapnoclean -
--nowrapproc -
--pgrpfile -
--pidfile -
-N -
-P -
-d -
-n -
-p