vsftpd(8) on Linux
The text 1d0b764d5ed5, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
Very Secure FTP Daemon
Flags it lists
-
-ooption -
-v