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-.\" Copyright (c) 1993 Michael Haardt (michael@moria.de),
-.\"     Fri Apr  2 11:32:09 MET DST 1993
-.\"
-.\" SPDX-License-Identifier: GPL-2.0-or-later
-.\"
-.\" Modified 1993-07-24 by Rik Faith (faith@cs.unc.edu)
-.\" Modified 2003-04-07 by Michael Kerrisk
-.\"
-.TH tty 4 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-tty \- controlling terminal
-.SH DESCRIPTION
-The file
-.I /dev/tty
-is a character file with major number 5 and
-minor number 0, usually with mode 0666 and ownership root:tty.
-It is a synonym for the controlling terminal of a process, if any.
-.P
-In addition to the
-.BR ioctl (2)
-requests supported by the device that
-.B tty
-refers to, the
-.BR ioctl (2)
-request
-.B TIOCNOTTY
-is supported.
-.SS TIOCNOTTY
-Detach the calling process from its controlling terminal.
-.P
-If the process is the session leader,
-then
-.B SIGHUP
-and
-.B SIGCONT
-signals are sent to the foreground process group
-and all processes in the current session lose their controlling tty.
-.P
-This
-.BR ioctl (2)
-call works only on file descriptors connected
-to
-.IR /dev/tty .
-It is used by daemon processes when they are invoked
-by a user at a terminal.
-The process attempts to open
-.IR /dev/tty .
-If the open succeeds, it
-detaches itself from the terminal by using
-.BR TIOCNOTTY ,
-while if the
-open fails, it is obviously not attached to a terminal and does not need
-to detach itself.
-.SH FILES
-.I /dev/tty
-.SH SEE ALSO
-.BR chown (1),
-.BR mknod (1),
-.BR ioctl (2),
-.BR ioctl_console (2),
-.BR ioctl_tty (2),
-.BR termios (3),
-.BR ttyS (4),
-.BR vcs (4),
-.BR pty (7),
-.BR agetty (8),
-.BR mingetty (8)