1.\" $NetBSD: tee.1,v 1.7 2003/08/07 11:16:07 agc Exp $ 2.\" 3.\" Copyright (c) 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" This code is derived from software contributed to Berkeley by 7.\" the Institute of Electrical and Electronics Engineers, Inc. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. Neither the name of the University nor the names of its contributors 18.\" may be used to endorse or promote products derived from this software 19.\" without specific prior written permission. 20.\" 21.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31.\" SUCH DAMAGE. 32.\" 33.\" @(#)tee.1 8.1 (Berkeley) 6/6/93 34.\" 35.Dd June 6, 1993 36.Dt TEE 1 37.Os 38.Sh NAME 39.Nm tee 40.Nd pipe fitting 41.Sh SYNOPSIS 42.Nm 43.Op Fl ai 44.Op Ar file ... 45.Sh DESCRIPTION 46The 47.Nm 48utility copies standard input to standard output, 49making a copy in zero or more files. 50The output is unbuffered. 51.Pp 52The following options are available: 53.Bl -tag -width Ds 54.It Fl a 55Append the output to the files rather than 56overwriting them. 57.It Fl i 58Ignore the 59.Dv SIGINT 60signal. 61.El 62.Pp 63The following operands are available: 64.Bl -tag -width file 65.It file 66A pathname of an output 67.Ar file . 68.El 69.Pp 70The 71.Nm 72utility takes the default action for all signals, 73except in the event of the 74.Fl i 75option. 76.Pp 77The 78.Nm 79utility exits 0 on success, and \*[Gt]0 if an error occurs. 80.Sh STANDARDS 81The 82.Nm 83function is expected to be 84.Tn POSIX 85.St -p1003.2 86compatible. 87