Make zoomctl stop look for the correct process to kill

zoomctl

@@ -17,7 +17,7 @@ case "${1}" in
 
 "stop")
 	# Stop zoomctl
-	pkill zoomctl start
+	kill $(ps a | grep -v grep | grep "zoomctl start" | cut --field=2 --delim=' ')
 
 	# Stop xfreerdp
 	/usr/local/bin/xfreerdpctl stop -a
@@ -27,11 +27,15 @@ case "${1}" in
 	;;
 
 "status")
-	if ps a | grep --quiet zoomctl start; then
+	if ps a | grep -v grep | grep --quiet "zoomctl start"; then
 		echo "zoomctl is running"
 	else
 		echo "zoomctl is not running"
 	fi
 	;;
 
+*)
+	echo "Usage: ${0} {start|stop|status}." >&2
+	exit 1
+	;;
 esac