Munin contributed plugins

#!/bin/sh

# Plugin to get the number of logged in users

# Written by Henrik Andersén 2010 <code@henrikandersen.se>

#

# Copyright (c) 2010, Henrik Andersen

# All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions are met:

#    * Redistributions of source code must retain the above copyright

#      notice, this list of conditions and the following disclaimer.

#    * 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.

#    * Neither the name of the copyright holder nor the

#      names of its contributors may be used to endorse or promote products

#      derived from this software without specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 Henrik Andersen 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.

#

case $1 in

   config)

        cat <<'EOM'

graph_args --base 1000 -l 0

graph_scale no

graph_category system

graph_info The number of users currently logged into the system

graph_title Logged in users

graph_vlabel users

user.info Number of users currently logged in

user.label users

user.min 0

EOM

        exit 0;;

esac

count=$(/usr/bin/who -q ) 

printf "user.value %i\n" ${count#*=}

exit 0