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1.\" Copyright (c) 1991 Regents of the University of California.
2.\" 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
9.\" are met:
10.\" 1. Redistributions of source code must retain the above copyright
11.\" notice, this list of conditions and the following disclaimer.
12.\" 2. Redistributions in binary form must reproduce the above copyright
13.\" notice, this list of conditions and the following disclaimer in the
14.\" documentation and/or other materials provided with the distribution.
15.\" 3. All advertising materials mentioning features or use of this software
16.\" must display the following acknowledgement:
17.\" This product includes software developed by the University of
18.\" California, Berkeley and its contributors.
19.\" 4. Neither the name of the University nor the names of its contributors
20.\" may be used to endorse or promote products derived from this software
21.\" without specific prior written permission.
22.\"
23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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34.\"
35.\" @(#)tee.1 6.5 (Berkeley) 7/29/91
36.\"
37.Dd July 29, 1991
38.Dt TEE 1
39.Os
40.Sh NAME
41.Nm tee
42.Nd Pipe fitting.
43.Sh SYNOPSIS
44.Nm tee
45.Op Fl ai
46.Op Ar file ...
47.Sh DESCRIPTION
48The
49.Nm tee
50utility copies standard input to standard output,
51making a copy in zero or more files.
52The output is unbuffered.
53.Pp
54The following options are available:
55.Bl -tag -width Ds
56.It Fl a
57Append the output to the files rather than
58overwriting them.
59.It Fl i
60Ignore the
61.Dv SIGINT
62signal.
63.El
64.Pp
65The following operands are available:
66.Bl -tag -width file
67.It file
68A pathname of an output
69.Ar file .
70.El
71.Pp
72The
73.Nm tee
74utility takes the default action for all signals,
75except in the event of the
76.Fl i
77option.
78.Pp
79The
80.Nm tee
81utility exits 0 on success, and >0 if an error occurs.
82.Sh STANDARDS
83The
84.Nm tee
85function is expected to be
86.Tn POSIX
87.St -p1003.2
88compatible.