.\" Copyright (c) 1983, 1993
.\" The Regents of the University of California. All rights reserved.
.\" %sccs.include.proprietary.roff%
.\" @(#)ttynam.3 8.1 (Berkeley) %G%
ttynam, isatty \- find name of a terminal port
.B character*(*) function ttynam (lunit)
.B logical function isatty (lunit)
returns a blank padded path name
of the terminal device associated with logical unit
is associated with a terminal device,
.ie \nM /usr/ucb/lib/libU77.a
returns an empty string (all blanks) if
is not associated with a terminal device in directory `/dev'.