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researchv10 Dan Cross

.TH TTY 1
.CT 1 comm_term
.SH NAME
tty, logtty \- get terminal name
.SH SYNOPSIS
.B tty
[
.B -s
]
.PP
.B logtty
.SH DESCRIPTION
.I Tty
prints the pathname associated with the standard input file
if it can be found in
the
.F /dev
directory,
.L "nameless pipe/"
and a unique string if the file is a pipe,
.L "not a tty"
otherwise.
Option
.L -s
suppresses output,
returning exit status only.
.PP
.I Logtty
prints the pathname associated with the terminal
on which the current session was logged in.
If the login terminal can't be found,
.L "no login tty"
is printed.
.PP
In a 
.IR mux (9.1)
window,
.I tty
reports the name of the window, while
.I logtty
reports the name of the terminal.
But see 
.SM BUGS.
.SH "SEE ALSO"
.IR who (1)
.SH DIAGNOSTICS
Exit status is
0 if a real pathname was printed,
1 for
.LR "not a tty"
or
.LR "no login tty" ,
2 for a pipe.
.SH BUGS
Mounting something atop the login terminal
hides it from
.IR logtty .
.IR Vismon (9.1)
does this.
.PP
Try
.LR "tty </" .

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