A/UX® Programmer's Reference Sections

ttyname(3C) ttyname(3C)
NAME
ttyname, isatty - find name of a terminal
SYNOPSIS
char *ttyname (ftldes)
int fildes;
int isatty (ftldes)
int fildes;
DESCRIPTION
ttyname returns a pointer to a string contammg the nullterminated
pathname of the terminal device associated with file
descriptor fildes.
RETURN VALUE
t tyname returns a NULL pointer iffildes does not describe a terminal
device in directory / dev.
is at t y returns 1 if fildes is associated with a tenninal device;
otherwise, it returns O.
FILES
/dev/*
BUGS
The return value points to static data whose content is overwritten
by each call.
1
February, 1990
RevisionC