MirOS Manual: tty(1)

TTY(1)                       BSD Reference 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 writ-
     ten.

     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.

     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.

STANDARDS

     The tty utility conforms to IEEE Std 1003.2-1992 ("POSIX.2").

HISTORY

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

MirOS BSD #10-current            June 6, 1993                                1

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