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.\" Copyright (c) 2024 Emma Tebibyte <emma@tebibyte.media>
.\"
.\" 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 rpn 1
.SH NAME
hru \(en human readable units
.SH SYNOPSIS
hru
.SH DESCRIPTION
Hru reads byte counts in the form of whole numbers from the standard input and
writes to the standard output the same number converted one of the units of data
defined by the International System of Units.
The program will convert the byte count to the highest unit possible where the
value is greater than one.
.SH DIAGNOSTICS
If encountering non-integer characters in the standard input, hru will exit with
the appropriate error code as defined by sysexits.h(3) and print an error
message.
.SH RATIONALE
The GNU projects ls(1) implementation contains a human-readable option (-h)
that, when specified, makes the tool print size information in a format more
immediately readable. This functionality is useful not only in the context of
ls(1) so the decision was made to split it into a new tool. The original
functionality in GNUs ls(1) can be emulated with fop(1) combined with this
program.
.SH STANDARDS
Hru follows the standard unit prefixes as specified by the Bureau International
des Poids et Mesures (BIPM) in the ninth edition of The International System of
Units (SI).
.SH AUTHOR
Written by Emma Tebibyte <emma@tebibyte.media>.
.SH COPYRIGHT
Copyright (c) 2024 Emma Tebibyte. License AGPLv3+: GNU AGPL version 3 or later
<https://gnu.org/licenses/agpl.html>.
.SH SEE ALSO
GNU ls(1), The International System of Units (SI) 9th Edition