added used RAM indicator

lemonbar.sh

@@ -56,10 +56,20 @@ separator(){
   echo -n "%{F$GREY}◆"
 }
 
+getMEM(){
+  total=$(grep 'MemTotal' /proc/meminfo | egrep -o '[0-9]+')
+  not_apps=0
+  for mem in $(egrep '(MemFree|Buffers|Cached|Slab|PageTables|SwapCached)' /proc/meminfo | egrep -o '[0-9]+'); do
+    not_apps=$((not_apps+mem))
+  done
+  USEDMEM=$(echo "$((total-not_apps))/1000" | bc)
+  echo -n "%{F$BLUE}$USEDMEM MB"
+}
+
 buildBar () {
   while true
   do
-    echo " $(getVolume) $(getMPD) %{c}$(buildClock) %{r} $(getDISK) $(separator) $(getNET) "
+    echo " $(getVolume) $(getMPD) %{c}$(buildClock) %{r} $(getMEM) $(separator) $(getDISK) $(separator) $(getNET) "
     sleep 1
   done
 }