diff --git a/con-test/con-test b/con-test/con-test
index 2d9d384..e04406a 100755
--- a/con-test/con-test
+++ b/con-test/con-test
@@ -42,7 +42,7 @@ SUDO=''
 stop_file_collect()
 {
 	side=$1
-	auth=$(check_auth $side)
+	auth=$(check_auth "$side")
 
 	if [[ "$side" == "$CLIENT" ]]; then
 		ip=$CLIENT_IP
@@ -57,10 +57,10 @@ stop_file_collect()
 	fi
 
 	if [[ "$auth" == "$PASSWD" ]]; then
-		sshpass -p $passwd ssh ${user}@${ip} \
+		sshpass -p "$passwd" ssh "${user}@${ip}" \
 			'touch /tmp/stop'
 	else
-		ssh -i $cert ${user}@${ip} \
+		ssh -i "$cert" "${user}@${ip}" \
 			'touch /tmp/stop'
 	fi
 }
@@ -72,7 +72,7 @@ add_timestamp()
 	run=$3
 	append=$4
 
-	while usleep $time
+	while usleep "$time"
 	do
 		if [ -f '/tmp/stop' ]; then
 			break
@@ -256,6 +256,66 @@ start_iperf()
 	fi
 }
 
+get_script_language()
+{
+	test_file=$1
+	if [ -z "$lang" ]; then
+		echo "nothing set"
+		lang=$(awk 'NR==1 { print $NF}' "$test_file" )
+	fi
+	case $lang in
+		sh | "env sh" | \
+		python | "env python" | \
+		python2 | \
+		python3 | \
+		perl | "perl -w" | \
+		"awk -f")
+			echo "$lang"
+			return $SUCCESS
+			;;
+		*)
+			return $FAILURE
+			;;
+	esac
+}
+
+# run user specific script
+#
+# Arguments:
+# script: script provided by user to run
+# side: where to start the script  0 for client, 1 for server
+#
+run_script()
+{
+	script=$1
+	side=$2
+	script_lang=$(get_script_language $script)
+	auth=$(check_auth "$side")
+
+	printf "${INFO} running script $script on $side"
+	if [[ "$side" == "$CLIENT" ]]; then
+		ip=$CLIENT_IP
+		user=$CLIENT_USER
+		passwd=$CLIENT_PASSWORD
+		cert=$CLIENT_CERTIFICATE
+	else
+		ip=$SERVER_IP
+		user=$SERVER_USER
+		passwd=$SERVER_PASSWORD
+		cert=$SERVER_CERTIFICATE
+	fi
+
+	if [[ "$auth" == "$PASSWD" ]]; then
+		sshpass -p "$passwd" scp "$script" "$user"@"$ip":/tmp/
+		sshpass -p "$passwd" ssh "$user"@"$ip" \
+			"$script_lang" "/tmp/$(basename "$script")"
+	else
+		scp -i "$cert" "$script" "$user"@"$ip":/tmp/
+		ssh -i "$cert" "$user"@"$ip" \
+			"$script_lang" "/tmp/$(basename "$script")"
+	fi
+}
+
 # start attenuators, get the attenuation up
 #
 # Arguments:
@@ -432,7 +492,14 @@ main()
 		fi
 
 		if [[ "$mon" == "$ON" ]]; then
-			bash wireless_monitor -o $LOG_PATH -c $config_path &
+			bash wireless_monitor -o "$LOG_PATH" \
+					      -c "$config_path" &
+		fi
+
+		#run scripts
+		if [ -n "${USER_SCRIPT[${i} - 1]}" ]; then
+			run_script "${USER_SCRIPT[${1} - 1]}" $CLIENT
+			run_script "${USER_SCRIPT[${1} - 1]}" $SERVER
 		fi
 
 		#start measurement
@@ -444,7 +511,7 @@ main()
 
 		sleep 3
 
-		start_antennuator ${ATTENUATOR_PARAMS[${i} - 1]}
+		start_antennuator "${ATTENUATOR_PARAMS[${i} - 1]}"
 
 		sleep 2
 
@@ -457,4 +524,4 @@ main()
 	done
 }
 
-main $@
+main "$@"
diff --git a/con-test/con-test.conf b/con-test/con-test.conf
index d4719ac..fd31ef6 100644
--- a/con-test/con-test.conf
+++ b/con-test/con-test.conf
@@ -25,6 +25,8 @@ TIME=('100000' '200000' '200000')
 # set name for package to update with number accordingly to update position
 # including the relativ, or absolute path to the package
 UPDATE_PKG=('' 'mac80211.ipk' '')
+
+USER_SCRIPT('' 'test.sh' '')
 # Optional:
 #	Provide Parameters for iperf according to the run number.
 #	-s/-c will be added by default