93 lines
2.4 KiB
Groff
93 lines
2.4 KiB
Groff
.\" Copyright (c) 2024 DTB <trinity@trinity.moe>
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.\" Copyright (c) 2024–2025 Emma Tebibyte <emma@tebibyte.media>
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.\"
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.\" This work is licensed under CC BY-SA 4.0. To see a copy of this license,
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.\" visit <http://creativecommons.org/licenses/by-sa/4.0/>.
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.\"
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.TH MM 1 2024-07-14 "Harakit X.X.X"
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.SH NAME
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mm \(en middleman
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.\"
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.SH SYNOPSIS
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mm
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.RB [ -aet ]
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.RB [ -i\ input ]
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.RB [ -o\ output ]
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.\"
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.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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.\"
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.SH OPTIONS
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.IP \fB-a\fP
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Opens outputs for appending rather than updating.
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.IP \fB-e\fP
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Use the standard error as an output.
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.IP \fB-t\fP
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Causes outputs to be overwritten instead of being truncated.
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.IP \fB-i\fP\ \fIinput\fP
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Opens a path as an input. If one or more of the input files is \(lq-\(rq or if
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no inputs are specified, the standard input shall be used. If specified as the
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last option and if there are trailing arguments to the program, they shall be
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appended to the list of files to use as inputs.
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.IP \fB-o\fP\ \fIoutput\fP
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Opens a path as an output. If one or more of the output files is \(lq-\(rq or
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if no outputs are specified and the
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.B -e
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option is not specified, the standard output shall be used. If specified as the
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last option and if there are trailing arguments to the program, they shall be
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appended to the list of files to use as outputs.
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.\"
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.SH DIAGNOSTICS
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If an output cannot be written to, an error occurs; however, exiting will be
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deferred until writing to any other specified outputs completes.
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When an error is encountered, a diagnostic message is printed and the program
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exits with the appropriate
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.BR sysexits.h (3)
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status.
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.\"
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.SH RATIONALE
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The
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.BR cat (1p)
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and
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.BR tee (1p)
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programs specified in \*(Px together provide similar functionality. The
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separation of the two sets of functionality into separate APIs seemed
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unncessary.
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.\"
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.SH HISTORY
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This utility originally had a \fB-u\fP option for compatibility with cat(1p),
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but this option is almost always default behavior in practice; therefore, it
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was dropped both for simplicity and to expand the
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.BR dj (1)
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utility\(cqs niche.
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.\"
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.SH AUTHOR
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Written by DTB
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.MT trinity@trinity.moe
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.ME .
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.\"
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.SH COPYRIGHT
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Copyright © 2023 DTB. License AGPLv3+: GNU AGPL version 3 or later
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<https://gnu.org/licenses/agpl.html>.
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.\"
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.\"
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.SH COPYRIGHT
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Copyright \(co 2024 DTB. License AGPLv3+: GNU AGPL version 3 or later
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<https://gnu.org/licenses/agpl.html>.
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.\"
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.SH SEE ALSO
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.BR cat (1p),
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.BR dd (1),
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.BR dj (1),
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.BR tee (1p)
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