91 lines
2.6 KiB
Groff
91 lines
2.6 KiB
Groff
.\" Copyright (c) 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" the Institute of Electrical and Electronics Engineers, Inc.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)tee.1 8.1 (Berkeley) 6/6/93
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.\" $FreeBSD$
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.\"
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.Dd June 23, 2020
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.Dt TEE 1
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.Os
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.Sh NAME
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.Nm tee
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.Nd duplicate standard input
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.Sh SYNOPSIS
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.Nm
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.Op Fl ai
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.Op Ar
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.Sh DESCRIPTION
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The
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.Nm
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utility copies standard input to standard output,
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making a copy in zero or more files.
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The output is unbuffered.
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.Pp
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The following options are available:
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.Bl -tag -width indent
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.It Fl a
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Append the output to the files rather than
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overwriting them.
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.It Fl i
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Ignore the
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.Dv SIGINT
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signal.
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.El
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.Pp
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The following operands are available:
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.Bl -tag -width indent
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.It Ar file
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A pathname of an output
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.Ar file .
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.El
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.Pp
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The
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.Nm
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utility takes the default action for all signals,
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except in the event of the
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.Fl i
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option.
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.Sh EXIT STATUS
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.Ex -std
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.Sh EXAMPLES
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Send the echoed message both to stdout and to the
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.Pa greetings.txt
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file:
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.Bd -literal -offset indent
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$ echo "Hello" | tee greetings.txt
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Hello
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.Ed
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.Sh STANDARDS
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The
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.Nm
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utility is expected to be
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.St -p1003.2
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compatible.
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