bonsix/docs/mm.1

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.\" Copyright (c) 2024 DTB <trinity@trinity.moe>
.\"
.\" This work is licensed under CC BY-SA 4.0. To see a copy of this license,
.\" visit <http://creativecommons.org/licenses/by-sa/4.0/>.
.TH mm 1
.SH NAME
mm \(en middleman
.SH SYNOPSIS
mm
.RB ( -aenu )
.RB ( -i
.RB [ input ])
.RB ( -o
.RB [ output ])
.SH DESCRIPTION
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Catenate input files and write them to the start of each output file or stream.
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.SH OPTIONS
.B -a
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.RS
Opens subsequent outputs for appending rather than updating.
.RE
.B -e
.RS
Set the output to the standard error.
.RE
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.B -i
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.RS
Opens a path as an input. Without any inputs specified mm will use the
standard input.
.RE
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.B -o
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.RS
Opens a path as an output. Without any outputs specified mm will use the
standard output.
.RE
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.B -u
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.RS
Ensures neither input or output will be buffered.
.RE
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.B -n
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.RS
Causes SIGINT signals to be ignored.
.RE
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.SH DIAGNOSTICS
If an output can no longer be written mm prints a diagnostic message, ceases
writing to that particular output, and if there are more outputs specified,
continues, eventually exiting unsuccessfully.
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When an error is encountered, diagnostic message is printed and the program
exits with the appropriate sysexits.h(3) status.
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.SH BUGS
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Existing files are not truncated, which may lead to unexpected results.
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.SH RATIONALE
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The cat(1p) and tee(1p) programs specified in POSIX provide equivalent
functionality. The separation of the two sets of functionality into separate
APIs seemed unncessary.
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.SH COPYRIGHT
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Copyright (c) 2024 DTB. License AGPLv3+: GNU AGPL version 3 or later
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<https://gnu.org/licenses/agpl.html>.
.SH SEE ALSO
cat(1p), dd(1), dj(1), tee(1p)