Add shell script to check the size of a directory

dir_size.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+MINS=$1
+MAXS=$2
+DIR=$3
+
+if [ ! -d $DIR ]; then
+  echo "status err $DIR does not exist"
+  exit
+fi
+
+SIZE="`du -sm $DIR | awk '{ print $1 }'`"
+
+RES="ok"
+if [ $SIZE -lt $MINS ] || [ $SIZE -gt $MAXS ]; then
+  RES="err"
+fi
+
+echo "status $RES $DIR is ${SIZE}MB"
+echo "metric dir_size int ${SIZE}"