ttyname(3) on FreeBSD
The text 0931b7768c3c, as FreeBSD 2.2.5-RELEASE, FreeBSD 2.2.2-RELEASE, FreeBSD 2.1.7.1-RELEASE, FreeBSD 2.1.7-RELEASE, FreeBSD 2.1.5-RELEASE, FreeBSD 2.0.5-RELEASE shipped it.
get name of associated terminal (tty) from file descriptor