Create linux_mac_changer.py

Python/linux_mac_changer.py

@@ -0,0 +1,41 @@
+#!/usr/bin/python3
+
+import subprocess
+import argparse
+import re
+
+def get_arguments():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("-i","--interface", dest="interface", help=" whose mac address is being changed")
+    parser.add_argument("-m","--mac", dest="new_mac", help=" new mac address")
+    args=parser.parse_args()
+    if not args.interface:
+        parser.error("Please specify an interface, use --help for more info ")
+    elif not args.new_mac:
+        parser.error("Please specify an interface, use --help for more info ")
+    return parser.parse_args()
+
+def change_mac(interface, new_mac):
+    subprocess.run(["sudo", "ifconfig", interface, "down"])
+    subprocess.run(["sudo", "ifconfig", interface, "hw", "ether", new_mac])
+    subprocess.run(["sudo", "ifconfig", interface, "up"])
+
+def current_mac(interface):
+    ifconfig_result=subprocess.run(["ifconfig",interface],capture_output=True)
+    mac_address_search_result= re.search(r"\w\w:\w\w:\w\w:\w\w:\w\w:\w\w",str(ifconfig_result.stdout))
+    if mac_address_search_result:
+        return mac_address_search_result.group(0)
+    else:
+        print(f"couldn't print mac address ")
+
+args= get_arguments()
+interface= args.interface
+new_mac= args.new_mac
+current_mac= current_mac(interface)
+print(f"current Mac = "+current_mac )
+
+change_mac(interface,new_mac)
+if current_mac(interface)== new_mac:
+    print(f"Mac address changed for {interface} to {new_mac}")
+else:
+    print("Mac address didnot changed")