Index: scripts/wifi_scan_for_networks.sh
===================================================================
diff -u -r5600d2133dd0ea6dc1f733aa78bd26e2a4892a38 -r0629dfe6bcc3e85047319284fa4c534efbf58594
--- scripts/wifi_scan_for_networks.sh	(.../wifi_scan_for_networks.sh)	(revision 5600d2133dd0ea6dc1f733aa78bd26e2a4892a38)
+++ scripts/wifi_scan_for_networks.sh	(.../wifi_scan_for_networks.sh)	(revision 0629dfe6bcc3e85047319284fa4c534efbf58594)
@@ -1,3 +1,9 @@
 #!/bin/sh
 
-iwlist wlan0 scan
+if [ $# -eq 0 ]; then
+    currentFile=$(basename "$0")
+    echo "Usage: ./$currentFile <iface>"
+    exit 0
+fi
+
+iwlist $1 scan