#!/bin/sh
#
# Script to monitor disk usage.
#
# Parameters understood:
#
# 	config   (required)
# 	autoconf (optional - used by munin-config)
#
# Magic markers (optional - used by munin-config and installation
# scripts):
#
#%# family=auto
#%# capabilities=autoconf

MAXLABEL=20

if [ "$1" = "autoconf" ]; then
	echo yes
	exit 0
fi

if [ "$1" = "config" ]; then

	echo 'graph_title Filesystem usage (in %)'
	echo 'graph_args --upper-limit 100 -l 0'
	echo 'graph_vlabel %'
	echo 'graph_category disk'
	echo 'graph_info This graph shows disk usage on the machine.'
	mfs=0
	/bin/df -P -t noprocfs,devfs,fdescfs,linprocfs,nfs | tail +2 | grep -v "//" | while read i; do
		case $i in
		mfs:*) name=mfs$mfs; mfs=`expr $mfs + 1`;;
		*) name=`echo $i | awk '{ gsub("[^a-zA-Z0-9_]", "_", $1); print $1 }'` ;;
		esac
		echo -n "$name.label "
		echo $i | awk "{
			dir=\$6;
			if (length(dir) <= $MAXLABEL)
				print dir
			else
				printf (\"...%s\n\", substr (dir, length(dir)-$MAXLABEL+4, $MAXLABEL-3))
			print \"$name.info \" \$6 \" -> \" \$1;
			}"
		echo "$name.warning 92"
		echo "$name.critical 98"
	done
	exit 0
fi

mfs=0
/bin/df -P -t noprocfs,devfs,fdescfs,linprocfs,nfs | tail +2 | grep -v "//" | while read i; do
	case $i in
	mfs:*) name=mfs$mfs; mfs=`expr $mfs + 1`;;
	*) name=`echo $i | awk '{ gsub("[^a-zA-Z0-9_]", "_", $1); print $1 }'` ;;
	esac
	echo -n "$name.value "
	echo $i | awk '{ print $5 }' | cut -f1 -d%
done
