diff --git a/.gitignore b/.gitignore
index 8762eb7..a2a56f7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,9 +1,8 @@
 .idea
 .venv
 /data/
-/configs/config.json
-/configs/config.yaml
-/configs/metrics.json
-/configs/metrics_win.json
+/configs/config.*
+/configs/metrics.*
+/configs/metrics_win.*
 /__pycache__/
 /metrics/__pycache__/
\ No newline at end of file
diff --git a/config_file.py b/config_file.py
index 0271383..718fb9b 100755
--- a/config_file.py
+++ b/config_file.py
@@ -35,7 +35,7 @@ def read_prop(filepath, sep='=', comment_char='#'):
                 conf[key] = value
     return conf
 
-def read_yaml(name): #ToDo: need to be tested!
+def read_yaml(name):
     conf = {}
     with open(name, 'r') as f:
         y_conf = yaml.safe_load(f)
diff --git a/metrics/MetricClasses.py b/metrics/MetricClasses.py
index b9ed3c7..818cf13 100755
--- a/metrics/MetricClasses.py
+++ b/metrics/MetricClasses.py
@@ -4,6 +4,7 @@ from abc import abstractmethod
 import time
 import platform
 import subprocess
+from linecache import cache
 
 import requests
 import psutil
@@ -113,8 +114,13 @@ def get_shell_value(command, args, callback=None):
 def is_ping(ip, count, callback=None):
     param = '-n' if platform.system().lower() == 'windows' else '-c'
     command = ['ping', param, str(count), ip]
-    output = subprocess.check_output(command)
-    result = 'unreachable' not in str(output) and 'could not find' not in str(output) and 'time out' not in str(output)
+    try:
+        output = subprocess.check_output(command)
+        result = ('unreachable'.upper() not in str(output).upper() and
+                  'could not find'.upper() not in str(output).upper() and
+                  'time out'.upper() not in str(output).upper())
+    except:
+        result = False
     if callback is not None:
         callback(result)
     else:
diff --git a/metrics/__pycache__/DataStructures.cpython-312.pyc b/metrics/__pycache__/DataStructures.cpython-312.pyc
deleted file mode 100644
index 96440c8..0000000
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diff --git a/metrics/__pycache__/MetricClasses.cpython-312.pyc b/metrics/__pycache__/MetricClasses.cpython-312.pyc
deleted file mode 100644
index 7269f49..0000000
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diff --git a/metrics/__pycache__/__init__.cpython-312.pyc b/metrics/__pycache__/__init__.cpython-312.pyc
deleted file mode 100644
index e866d85..0000000
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