4.4BSD/usr/src/share/man/man3f/ttynam.3

Compare this file to the similar file:
Show the results in this format: 

.\" Copyright (c) 1983, 1993
.\"	The Regents of the University of California.  All rights reserved.
.\"
.\" This module is believed to contain source code proprietary to AT&T.
.\" Use and redistribution is subject to the Berkeley Software License
.\" Agreement and your Software Agreement with AT&T (Western Electric).
.\"
.\"	@(#)ttynam.3	8.1 (Berkeley) 6/5/93
.\"
.TH TTYNAM 3F "June 5, 1993"
.UC 5
.SH NAME
ttynam, isatty \- find name of a terminal port
.SH SYNOPSIS
.B character*(*) function ttynam (lunit)
.sp 1
.B logical function isatty (lunit)
.SH DESCRIPTION
.I Ttynam
returns a blank padded path name
of the terminal device associated with logical unit
.IR lunit .
.PP
.I Isatty
returns
.B .true.
if
.I lunit
is associated with a terminal device,
.B .false.
otherwise.
.SH FILES
/dev/\(**
.br
.ie \nM /usr/ucb/lib/libU77.a
.el /usr/lib/libU77.a
.SH DIAGNOSTICS
.I Ttynam
returns an empty string (all blanks) if
.I lunit
is not associated with a terminal device in directory `/dev'.