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.\" Copyright (c) 2024 DTB <trinity@trinity.moe>
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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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2024-06-03 00:47:14 +00:00
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.\"
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2024-02-18 06:43:22 +00:00
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.TH mm 1
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.SH NAME
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mm \(en middleman
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.SH SYNOPSIS
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.\"
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mm
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.RB ( -aenu )
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.RB ( -i
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.RB [ input ])
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.RB ( -o
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.RB [ output ])
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.\"
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.SH DESCRIPTION
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.\"
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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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.\"
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.IP -a
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Opens subsequent outputs for appending rather than updating.
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.IP -e
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Use the standard error as an output.
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.IP -i
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Opens a path as an input. Without any inputs specified mm will use the
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standard input. The standard input shall be used as an input if one or more of
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the input files is “-”.
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.IP -o
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Opens a path as an output. Without any outputs specified mm will use the
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standard output. The standard output shall be used as an output if one or more
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of the output files is “-”.
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.IP -u
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Ensures neither input or output will be buffered.
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.IP -n
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Causes SIGINT signals to be ignored.
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.SH DIAGNOSTICS
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If an output can no longer be written mm prints a diagnostic message, ceases
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writing to that particular output, and if there are more outputs specified,
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continues, eventually exiting unsuccessfully.
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When an error is encountered, diagnostic message is printed and the program
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exits with the appropriate sysexits.h(3) status.
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.SH CAVEATS
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Existing files are not truncated on ouput and are instead overwritten.
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.SH RATIONALE
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2024-03-29 22:30:06 +00:00
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The cat(1p) and tee(1p) programs specified in POSIX together provide similar
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functionality. The separation of the two sets of functionality into separate
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APIs seemed unncessary.
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.SH COPYRIGHT
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2024-02-23 02:14:38 +00:00
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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>.
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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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