TTY(1) | General Commands Manual | TTY(1)

# NAME

`tty` — return user's terminal name

# SYNOPSIS

`tty` | [`-s`]

# DESCRIPTION

The `tty` utility writes the name of the terminal attached to standard input to standard output. The name that is written is the string returned by ttyname(3).

If the standard input is not a terminal, the message “not a tty” is written.

The options are as follows:

`-s`
  Don't write the terminal name; only the exit status is affected when this option is specified. The `-s` option is deprecated in favor of the “`test -t 0`” command.

# EXIT STATUS

The `tty` utility exits 0 if the standard input is a terminal, 1 if the standard input is not a terminal, or >1 if an error occurred.

# SEE ALSO

stty(1), test(1), ttyname(3), tty(4)

# STANDARDS

The `tty` utility is compliant with the IEEE Std 1003.1-2008 (“POSIX.1”) specification.

# HISTORY

A `tty` command appeared in Version 1 AT&T UNIX.

June 3, 2014 | Debian