Add RamUsage.getLoad

Signed-off-by: yoyosource <yoyosource@nidido.de>

BauSystem_Main/src/de/steamwar/bausystem/features/world/RamUsage.java

@@ -42,6 +42,19 @@ public class RamUsage {
         }
     }
 
+    public static double getLoad() {
+        try {
+            Process process = new ProcessBuilder("bash", "-c", "cat <(grep 'cpu ' /proc/stat) <(sleep 1 && grep 'cpu ' /proc/stat) | awk -v RS=\"\" '{printf \"%.2f\\n\", ($13-$2+$15-$4)*100/($13-$2+$15-$4+$16-$5)}'").start();
+            process.waitFor();
+            return Double.parseDouble(new BufferedReader(new InputStreamReader(process.getInputStream())).readLine());
+        } catch (IOException e) {
+            return 1D;
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            return 1D;
+        }
+    }
+
     private static long getNumber(String s) {
         return Long.parseLong(s.split(" ")[1]);
     }