ttynam.3f

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· 3F 代码 · 共 39 行

.\" SCCSID: @(#)ttynam.3f	8.1	9/11/90
.TH ttynam 3f VAX "" Unsupported
.SH Name
ttynam, isatty \- find name of a terminal port
.SH Syntax
.B character*(*) function ttynam (lunit)
.sp 1
.B logical function isatty (lunit)
.SH Description
.NXR "ttynam subroutine (FORTRAN)"
.NXR "isatty subroutine (FORTRAN)"
.NXR "terminal" "finding port name"
The
.PN ttynam
subroutine
returns a blank padded pathname
of the terminal device associated with logical unit
.IR lunit .
.PP
The
.PN isatty
subroutine returns .true.
Otherwise,
if
.I lunit
is associated with a terminal device, .false.
.SH Diagnostics
The
.PN ttynam
returns an empty string (all blanks) if
.I lunit
is not associated with a terminal device in directory 
.PN /dev .
.SH Files
/dev/\(**
.br
.ie \nM /usr/ucb/lib/libU77.a
.el /usr/lib/libU77.a