@(#)ttyname.3 6.1 (Berkeley) 05/15/85
TTYNAME 3 ""
.AT 3
NAME
ttyname, isatty, ttyslot - find name of a terminal
SYNOPSIS
char *ttyname(filedes) isatty(filedes)
ttyslot()
DESCRIPTION
Ttyname returns a pointer to the null-terminated path name
of the terminal device associated with file descriptor
filedes (this is a system file descriptor and has nothing to do with the
standard I/O FILE typedef).
Isatty returns 1 if filedes 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/\(**
SEE ALSO
ioctl(2), ttys(5)
DIAGNOSTICS
Ttyname returns a null pointer (0) if
filedes 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.