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+.\"-
+.\" Copyright (c) 2019 Tom Rhodes
+.\" All rights reserved.
+.\"
+.\" 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+.\"
+.\" $Id$
+.\"
+.Dd March 11, 2019
+.Dt save-entropy
+.Os
+.Sh NAME
+.Nm save-entropy
+.Nd "Save system entropy"
+.Sh SYNOPSIS
+.Nm
+.Sh DESCRIPTION
+The
+.Nm
+script is used to store bits of randomness which are
+then used to seed
+.Dv /dev/random
+on boot.
+On
+.Fx
+the
+.Dv /dev/random
+device is seeded with environmental noise to aid in random number
+generation.
+The
+.Nm
+script allows this noise to be stored for boot time usage.
+The
+.Nm
+script is ran from a line in
+.Fa /etc/crontab
+as the operator user.
+This script will rotate entropy files located in
+.Pa /var/db/entropy
+and place a number at the end of each file.
+.Sh EXIT STATUS
+Exit status is 0 on success or 1 if the command has failed.
+An error will be logged when the command fails.
+.Sh SEE ALSO
+.Xr random 4 ,
+.Xr rc.conf 5 .