=head1 DESCRIPTION
This small program is the glue between collectd and nagios. collectd collects
-various performance statistics which is provides via the C<unixsock plugin>,
+various performance statistics which it provides via the C<unixsock plugin>,
see L<collectd-unixsock(5)>. This program is called by Nagios, connects to the
UNIX socket and reads the values from collectd. It then returns B<OKAY>,
B<WARNING> or B<CRITICAL> depending on the values and the ranges provided by