tty display terminal name	Command
	SYNOPSIS DESCRIPTION   Options DIAGNOSTICS PORTABILITY SEE ALSO

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SYNOPSIS

tty [-s]

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DESCRIPTION

tty displays the file name of the terminal device associated with the standard input.

Options

-s

does not display the name; the exit status of tty indicates whether or not the standard input is a terminal.

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DIAGNOSTICS

Possible exit status values are:

0

Standard input is a terminal.

1

Standard input is not a terminal.

2

Failure because of unknown command line option, or too many arguments.

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PORTABILITY

POSIX.2. x/OPEN Portability Guide 4.0.

The POSIX standard considers the -s option to be obsolete.

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SEE ALSO

Commands: