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TTY(1)			  BSD 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 in-
     put 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	     Do	not 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, and >1 if an error occurs.

SEE ALSO
     test(1), ttyname(3)

STANDARDS
     The tty utility is	expected to be IEEE Std	1003.2 ("POSIX.2") compatible.

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

BSD				 June 6, 1993				   BSD

NAME | SYNOPSIS | DESCRIPTION | EXIT STATUS | SEE ALSO | STANDARDS | HISTORY

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