Index: scripts/wifi_generate_wpa_supplicant.sh
===================================================================
diff -u -rfa1cf5c0749a6249bec9a5f5653e3a19cbaba24a -r0629dfe6bcc3e85047319284fa4c534efbf58594
--- scripts/wifi_generate_wpa_supplicant.sh	(.../wifi_generate_wpa_supplicant.sh)	(revision fa1cf5c0749a6249bec9a5f5653e3a19cbaba24a)
+++ scripts/wifi_generate_wpa_supplicant.sh	(.../wifi_generate_wpa_supplicant.sh)	(revision 0629dfe6bcc3e85047319284fa4c534efbf58594)
@@ -1,4 +1,11 @@
 #!/bin/sh
+
+if [ $# -eq 0 ]; then
+    currentFile=$(basename "$0")
+    echo "Usage: ./$currentFile <ssid> <password> <dst_file.conf> <security_type>"
+    exit 0
+fi
+
 ssid=$1
 password=$2
 dest=$3