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Command: ttyname | Section: 3 | Source: UNIX v7 | File: ttyname.3
TTYNAME(3) Library Functions Manual TTYNAME(3)
NAME
ttyname, isatty, ttyslot - find name of a terminal
SYNOPSIS
char *ttyname(fildes)
isatty(fildes)
ttyslot()
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.
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 termi-
nal device in directory `/dev'.
Ttyslot returns 0 if `/etc/ttys' is inaccessible or if it cannot deter-
mine the control terminal.
BUGS
The return value points to static data whose content is overwritten by
each call.
TTYNAME(3)