jgrevich · July 11, 2014 02:08 · Jul 11, 2014
diff --git a/door_bell.sh b/door_bell.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+
+# setup constants
+CURRENT_LIST_PATH=/tmp/wifi_client_macs_current
+PREVIOUS_LIST_PATH=/tmp/wifi_client_macs_previous
+
+while [ "true" ]
+        do
+        # backup old file if it exists
+        if [ -f $CURRENT_LIST_PATH ];
+        then
+                cp $CURRENT_LIST_PATH $PREVIOUS_LIST_PATH
+        fi
+
+        # grab MACs from 2.4Ghz radio
+        wl -i eth1 assoclist | cut -d" " -f2 > $CURRENT_LIST_PATH
+
+        # grab MACs from 5Ghz radio
+        wl -i eth2 assoclist | cut -d" " -f2 >> $CURRENT_LIST_PATH
+
+
+        # do something if desired mac appears in list
+        if grep -Fxq "3C:15:C2:18:F1:8F" $CURRENT_LIST_PATH
+        then
+                echo "Justin is home"
+        else
+                printf "."
+        fi
+  sleep 1
+done