ttyname(3C) ttyname(3C)NAME ttyname, isatty - find name of a terminal SYNOPSIS char *ttyname(fildes) int fildes; int isatty(fildes) int fildes; DESCRIPTION ttyname returns a pointer to a string containing the null- terminated pathname of the terminal device associated with file descriptor fildes. RETURN VALUE ttyname returns a NULL pointer if fildes does not describe a terminal device in directory /dev. isatty returns 1 if fildes is associated with a terminal device; otherwise, it returns 0. FILES /dev/* BUGS The return value points to static data whose content is overwritten by each call. April, 1990 1