NAME

tty − get the terminal’s name

SYNOPSIS

tty [ −s ]

DESCRIPTION

Tty prints the path name of the user’s terminal.  The −s option inhibits printing, allowing one to test just the exit code. 

EXIT CODES

0       if standard input is a terminal,
1       otherwise.

DIAGNOSTICS

“not a tty” if the standard input is not a terminal and −s is not specified.