TTYNAME(3) TTYNAME(3) NAME ttyname, cttyname, isatty, ttyslot - find name of a terminal SYNOPSIS char *ttyname(fildes) char *cttyname() isatty(fildes) ttyslot() DESCRIPTION Ttyname returns a pointer to the null-terminated path name of the terminal device associated with file descriptor fildes. Cttyname returns a pointer to the path name of the terminal device associated with the first file descriptor among 0,1,2 that is connected to a terminal device. This probably is the control terminal for the present process. Isatty returns 1 if fildes is associated with a terminal device, 0 otherwise. Ttyslot returns the number of the entry in the ttys(5) file for the control terminal of the current process. FILES /dev/* /etc/ttys SEE ALSO ioctl(2), ttys(5) DIAGNOSTICS Ttyname returns a null pointer (0) if fildes does not describe a terminal device in directory `/dev'. Ttyslot returns 0 if `/etc/ttys' is inaccessible or if it cannot determine the control terminal. BUGS The return value points to static data whose content is overwritten by each call.