Man Page isatty.3f




NAME

     ttynam, isatty - find name of terminal port; also: is unit a
     terminal?


SYNOPSIS

     character*(*) function ttynam (lunit)

     logical function isatty (lunit)


DESCRIPTION

     The function ttynam returns a blank-padded path name of  the
     terminal device associated with logical unit lunit.

     The function isatty returns .true. if  lunit  is  associated
     with a terminal device, .false. otherwise.


FILES

     /dev/*
     libF77.a


DIAGNOSTICS

     The function ttynam returns an empty string (all blanks)  if
     lunit is not associated with a terminal device in the direc-
     tory /dev.