TTY(1)

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.

`tty` exits 0 if the standard input is a terminal, 1 if the standard input is not a terminal, and >1 if an error occurs.

# SEE ALSO

test(1), ttyname(3)

# STANDARDS

The `tty` utility conforms to IEEE Std 1003.2-1992 (“POSIX.2”).

# HISTORY

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

September 1, 2019 | NetBSD 11.0