NAME

ttyname, isatty − find name of a terminal

SYNOPSIS

char ∗ttyname(filedes)

isatty(filedes)

DESCRIPTION

ttyname() returns a pointer to the NULL-terminated path name of the terminal device associated with file descriptor filedes.

isatty() returns 1 if filedes is associated with a terminal device, 0 otherwise. 

FILES

/dev/∗

SEE ALSO

ioctl(2), ttytab(5)

DIAGNOSTICS

ttyname() returns a NULL pointer if filedes does not describe a terminal device in directory /dev. 

BUGS

The return value points to static data whose content is overwritten by each call. 

Sun Release 4.0  —  Last change: 6 October 1987