prevent unknown operand warning on console

files/lib/gluon/ssid-changer/ssid-changer.sh

@@ -33,14 +33,14 @@ then
 	echo "Gateway TQ is $GATEWAY_TQ node is online"
 	for HOSTAPD in $(ls /var/run/hostapd-phy*); do # check status for all physical devices
 		CURRENT_SSID=`grep "^ssid=$ONLINE_SSID" $HOSTAPD | cut -d"=" -f2`
-		if [ $CURRENT_SSID == $ONLINE_SSID ]
+		if [ "$CURRENT_SSID" == "$ONLINE_SSID" ]
 		then
 			echo "SSID $CURRENT_SSID is correct, noting to do"
 			HUP_NEEDED=0
 			break
 		fi
 		CURRENT_SSID=`grep "^ssid=$OFFLINE_SSID" $HOSTAPD | cut -d"=" -f2`
-		if [ $CURRENT_SSID == $OFFLINE_SSID ]
+		if [ "$CURRENT_SSID" == "$OFFLINE_SSID" ]
 		then
 			logger -s -t "gluon-offline-ssid" -p 5 "TQ is $GATEWAY_TQ, SSID is $CURRENT_SSID, change to $ONLINE_SSID" # write info to syslog
 			sed -i "s~^ssid=$CURRENT_SSID~ssid=$ONLINE_SSID~" $HOSTAPD
@@ -56,14 +56,14 @@ then
 	echo "Gateway TQ is $GATEWAY_TQ node is considered offline"
 	for HOSTAPD in $(ls /var/run/hostapd-phy*); do # check status for all physical devices
 		CURRENT_SSID="$(grep "^ssid=$OFFLINE_SSID" $HOSTAPD | cut -d"=" -f2)"
-		if [ $CURRENT_SSID == $OFFLINE_SSID ]
+		if [ "$CURRENT_SSID" == "$OFFLINE_SSID" ]
 		then
 			echo "SSID $CURRENT_SSID is correct, noting to do"
 			HUP_NEEDED=0
 			break
 		fi
 		CURRENT_SSID="$(grep "^ssid=$ONLINE_SSID" $HOSTAPD | cut -d"=" -f2)"
-		if [ $CURRENT_SSID == $ONLINE_SSID ]
+		if [ "$CURRENT_SSID" == "$ONLINE_SSID" ]
 		then
 			logger -s -t "gluon-offline-ssid" -p 5 "TQ is $GATEWAY_TQ, SSID is $CURRENT_SSID, change to $OFFLINE_SSID"
 			sed -i "s~^ssid=$ONLINE_SSID~ssid=$OFFLINE_SSID~" $HOSTAPD