1.\" Copyright (c) 1990, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the Institute of Electrical and Electronics Engineers, Inc. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions --- 19 unchanged lines hidden (view full) --- 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" @(#)tty.1 8.1 (Berkeley) 6/6/93 |
36.\" $FreeBSD: head/usr.bin/tty/tty.1 95124 2002-04-20 12:18:28Z charnier $ |
37.\" 38.Dd June 6, 1993 39.Dt TTY 1 40.Os 41.Sh NAME 42.Nm tty 43.Nd return user's terminal name 44.Sh SYNOPSIS --- 15 unchanged lines hidden (view full) --- 60when this option is specified. 61The 62.Fl s 63option is deprecated in favor of the 64.Dq Li "test -t 0" 65command. 66.El 67.Pp |
68The 69.Nm 70utility |
71exits 0 if the standard input is a terminal, 1 if the standard input is 72not a terminal, and >1 if an error occurs. 73.Sh SEE ALSO 74.Xr test 1 , 75.Xr ttyname 3 76.Sh STANDARDS 77The 78.Nm 79utility is expected to be 80.St -p1003.2 81compatible. 82.Sh HISTORY 83A 84.Nm 85command appeared in 86.At v1 . |