*** UNIX MANUAL PAGE BROWSER ***

TTYNAME(3) Library Functions Manual TTYNAME(3) NAME ttyname, isatty, nametty - find or set name of a terminal SYNOPSIS char *ttyname(fildes) isatty(fildes) nametty(fildes, file) char *file; DESCRIPTION Ttyname returns a pointer to the null-terminated path name of the ter- minal device associated with file descriptor fildes. Isatty returns 1 if fildes is associated with a terminal device, 0 oth- erwise. Nametty arranges that future opens of file will refer to the stream opened on fildes. File must exist before nametty is called. The arrangement is terminated when the other end of the stream is closed or hung up. FILES list of tty directories for ttyname SEE ALSO fmount(2), ioctl(2) DIAGNOSTICS Ttyname returns if fildes does not describe an entry in any of the di- rectories listed in Nametty returns 1 for success, 0 for failure (file does not exist, fildes is not a stream). BUGS The return value of ttyname points to static data whose content is overwritten by each call. If fildes is a network connection, isatty may produce answers having more to do with the network than to the file to which network data is copied. In particular, it always returns no for connections set up by rx, and always returns yes for connections arranged by dcon; see con(1). TTYNAME(3)