glenda.party
term% ls -F
term% pwd 
$home/manuals/unix_v8/1/tty
term% cat index.txt 
TTY(1)                      General Commands Manual                     TTY(1)

NAME
       tty - get terminal name

SYNOPSIS
       tty

DESCRIPTION
       Tty prints the pathname of the user's terminal.

DIAGNOSTICS
       ‘not a tty' if the standard input file is not a terminal.

                                                                        TTY(1)