TTYNAM(3F) TTYNAM(3F) NAME ttynam, isatty - find name of a terminal port SYNOPSIS character*(*) function ttynam (lunit) logical function isatty (lunit) DESCRIPTION Ttynam returns a blank padded path name of the terminal device associ‐ ated with logical unit lunit. Isatty returns .true. if lunit is associated with a terminal device, .false. otherwise. FILES /dev/∗ /usr/lib/libU77.a DIAGNOSTICS Ttynam returns an empty string (all blanks) if lunit is not associated with a terminal device in directory ‘/dev’. 4.2 Berkeley Distribution May 15, 1985 TTYNAM(3F)