Copyright (c) 1991, 1993
The Regents of the University of California. All rights reserved.
This code is derived from software contributed to Berkeley by
the Institute of Electrical and Electronics Engineers, Inc.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
.Dd October 30, 2022 .Dt TEE 1 .Os .Sh NAME .Nm tee .Nd duplicate standard input .Sh SYNOPSIS .Nm .Op Fl ai .Op Ar .Sh DESCRIPTION The .Nm utility copies standard input to standard output, making a copy in zero or more files. The output is unbuffered.
The Regents of the University of California. All rights reserved.
This code is derived from software contributed to Berkeley by
the Institute of Electrical and Electronics Engineers, Inc.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
.Dd October 30, 2022 .Dt TEE 1 .Os .Sh NAME .Nm tee .Nd duplicate standard input .Sh SYNOPSIS .Nm .Op Fl ai .Op Ar .Sh DESCRIPTION The .Nm utility copies standard input to standard output, making a copy in zero or more files. The output is unbuffered.
p The following options are available: l -tag -width indent t Fl a Append the output to the files rather than overwriting them. t Fl i Ignore the .Dv SIGINT signal. .El
p The following operands are available: l -tag -width indent t Ar file A pathname of an output .Ar file . .El
p The .Nm utility takes the default action for all signals, except in the event of the .Fl i option. .Sh EXIT STATUS .Ex -std .Sh EXAMPLES Send the echoed message both to stdout and to the
a greetings.txt file: d -literal -offset indent $ echo "Hello" | tee greetings.txt Hello .Ed .Sh STANDARDS The .Nm utility is expected to be .St -p1003.2 compatible. .Sh HISTORY The .Nm command first appeared in .At v7 .