diff --git a/opt/ahenk/base/system/system.py b/opt/ahenk/base/system/system.py
index 043663e..dd20e21 100644
--- a/opt/ahenk/base/system/system.py
+++ b/opt/ahenk/base/system/system.py
@@ -13,10 +13,6 @@ import fcntl
 import struct
 from uuid import getnode as get_mac
 
-"""
-some functions closed because of dependency management
-"""
-
 
 class System:
     class Ahenk(object):
@@ -191,21 +187,13 @@ class System:
         def user_details():
             return psutil.users()
 
+
+
         @staticmethod
         def last_login_username():
             # TODO
             pass
 
-        """
-        @staticmethod
-        def user_name():
-            arr = []
-            for user in psutil.get_users():
-                if str(user[0]) is not 'None' and user[0] not in arr:
-                    arr.append(user[0])
-            return arr
-        """
-
     class Os(object):
 
         @staticmethod
@@ -349,17 +337,6 @@ class System:
 
                 return arr
 
-            """
-            @staticmethod
-            def mac_addresses():
-                arr=[]
-                for iface in psutil.net_io_counters(pernic=True):
-                    mac = open('/sys/class/net/' + iface + '/address').readline()
-                    if str(mac[0:17]) != "00:00:00:00:00:00":
-                        arr.append(mac[0:17])
-                return arr
-            """
-
         @staticmethod
         def interfaces_details():
             return psutil.net_if_addrs()
diff --git a/opt/ahenk/base/util/util.py b/opt/ahenk/base/util/util.py
index ca75a72..7a7bc68 100644
--- a/opt/ahenk/base/util/util.py
+++ b/opt/ahenk/base/util/util.py
@@ -225,4 +225,4 @@ class Util:
         with open(fname, 'rb') as f:
             for chunk in iter(lambda: f.read(4096), b""):
                 hash_md5.update(chunk)
-        return str(hash_md5.hexdigest())
+        return str(hash_md5.hexdigest())
\ No newline at end of file