diff --git a/plugins/lxc/lxc_ram b/plugins/lxc/lxc_ram
index 4208f875..6bb765e6 100755
--- a/plugins/lxc/lxc_ram
+++ b/plugins/lxc/lxc_ram
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # -*- sh -*-
 
 : << =cut
@@ -40,94 +40,83 @@ Unknown license
 
 =cut
 
-. $MUNIN_LIBDIR/plugins/plugin.sh
 
-guest_names=`lxc-ls | sort -u`
+# configurable: true/false
+areastack=${areastack:-false}
+
+
+# shellcheck disable=SC1090
+. "$MUNIN_LIBDIR/plugins/plugin.sh"
+
+
+guest_names=$(lxc-ls | sort -u)
 for guest in $guest_names; do
- if lxc-info -n $guest 2>&1 | grep -qs RUNNING ; then
-  active="$active $guest"
- fi
+    if lxc-info -n "$guest" 2>&1 | grep -qs RUNNING ; then
+        active="$active $guest"
+    fi
 done
 guest_names="$active"
-                
+
 
 f_comm='lxc-cgroup  '
 
+
+do_autoconf() {
+    if [ -r /proc/stat ]; then
+        echo yes
+    else
+        echo "no (no /proc/stat)"
+    fi
+}
+
+
+do_config() {
+    echo 'graph_title Memory '
+    echo 'graph_args -l 0 --base 1024'
+    echo 'graph_vlabel byte'
+    echo 'graph_category memory'
+
+    for guest_name in $guest_names; do
+        guest="$(clean_fieldname "$guest_name")"
+        echo "mem_usage_$guest.label $guest_name: Mem usage"
+        echo "mem_usage_$guest.type GAUGE"
+        if [ "$areastack" = "true" ]; then
+            echo "mem_usage_$guest.draw AREASTACK"
+        fi
+        echo "mem_cache_$guest.label $guest_name: Cache"
+        echo "mem_cache_$guest.type GAUGE"
+        echo "mem_active_$guest.label $guest_name: Active"
+        echo "mem_active_$guest.type GAUGE"
+        echo "mem_inactive_$guest.label $guest_name: Inactive"
+        echo "mem_inactive_$guest.type GAUGE"
+    done
+}
+
+
+do_fetch() {
+    for guest_name in $guest_names; do
+        guest="$(clean_fieldname "$guest_name")"
+
+        value=$($f_comm -n "$guest_name" memory.usage_in_bytes)
+        echo "mem_usage_$guest.value $value"
+
+        value=$($f_comm -n "$guest_name" memory.stat | grep total_cache | awk '{print($2)}')
+        echo "mem_cache_$guest.value $value"
+
+        value=$($f_comm -n "$guest_name" memory.stat | grep total_active_anon | awk '{print($2)}')
+        echo "mem_active_$guest.value $value"
+
+        value=$($f_comm -n "$guest_name" memory.stat | grep total_inactive_anon | awk '{print($2)}')
+        echo "mem_inactive_$guest.value $value"
+    done
+}
+
+
 if [ "$1" = "autoconf" ]; then
-	if [ -r /proc/stat ]; then
-		echo yes
-		exit 0
-	else
-		echo "no (no /proc/stat)"
-		exit 0
-	fi
+    do_autoconf
+elif [ "$1" = "config" ]; then
+    do_config
+    if [ "${MUNIN_CAP_DIRTYCONFIG:-0}" = "1" ]; then do_fetch; fi
+else
+    do_fetch
 fi
-
-if [ "$1" = "config" ]; then
-
- echo 'graph_title Memory '
- echo 'graph_args -l 0 --base 1024'
- echo 'graph_vlabel byte'
- echo 'graph_category memory'
-
- if [ "$areastack" = "true" ]; then
-  for guest_name in $guest_names; do
-    guest="$(clean_fieldname $guest_name)"
-
-    echo 'mem_usage_'$guest'.label '$guest_name': Mem usage'
-    echo 'mem_usage_'$guest'.type GAUGE'
-    echo 'mem_usage_'$guest'.draw AREASTACK'
-  done
-  
-  for guest_name in $guest_names; do
-    guest="$(clean_fieldname $guest_name)"
-
-   echo 'mem_cache_'$guest'.label '$guest_name': Cache'
-   echo 'mem_cache_'$guest'.type GAUGE'
-   echo 'mem_active_'$guest'.label '$guest_name': Active'
-   echo 'mem_active_'$guest'.type GAUGE'
-   echo 'mem_inactive_'$guest'.label '$guest_name': Inactive'
-   echo 'mem_inactive_'$guest'.type GAUGE'
-
-  done
- else
-  for guest_name in $guest_names;
-   do
-    guest="$(clean_fieldname $guest_name)"
-
-    echo 'mem_usage_'$guest'.label '$guest_name': Mem usage'
-    echo 'mem_usage_'$guest'.type GAUGE'
-    echo 'mem_cache_'$guest'.label '$guest_name': Cache'
-    echo 'mem_cache_'$guest'.type GAUGE'
-    echo 'mem_active_'$guest'.label '$guest_name': Active'
-    echo 'mem_active_'$guest'.type GAUGE'
-    echo 'mem_inactive_'$guest'.label '$guest_name': Inactive'
-    echo 'mem_inactive_'$guest'.type GAUGE'
-
-   done
- fi
- 
- exit 0
-fi
-
-
- for guest_name in $guest_names;
-  do
-   guest="$(clean_fieldname $guest_name)"
-
-   tmp_v=`$f_comm -n $guest_name memory.usage_in_bytes`
-   echo 'mem_usage_'$guest'.value '$tmp_v
-   
-   tmp_g=`$f_comm -n $guest_name memory.stat | grep total_cache`
-   tmp_v=`echo $tmp_g | awk '{print($2)}'`
-   echo  'mem_cache_'$guest'.value '$tmp_v
-   
-   tmp_g=`$f_comm -n $guest_name memory.stat | grep total_active_anon`
-   tmp_v=`echo $tmp_g | awk '{print($2)}'`
-   echo  'mem_active_'$guest'.value '$tmp_v
-   
-   tmp_g=`$f_comm -n $guest_name memory.stat | grep total_inactive_anon`
-   tmp_v=`echo $tmp_g | awk '{print($2)}'`
-   echo  'mem_inactive_'$guest'.value '$tmp_v
-
-  done