Looking for one more sign

.local/bin/setvol

@@ -0,0 +1,19 @@
+#!/bin/sh
+steps="5"
+dev=@DEFAULT_SINK@
+! [ "$1" = '-m' ] || { dev=@DEFAULT_SOURCE@; shift; }
+
+send_signal(){
+  if [ "$dev" == "@DEFAULT_SINK@" ]; then
+	  pkill -RTMIN+2 slstatus
+  elif [ "$dev" == "@DEFAULT_SOURCE@" ]; then
+	  pkill -RTMIN+3 slstatus
+  fi
+}
+
+case "$1" in
+	mute) wpctl set-mute "$dev" toggle; send_signal ;;
+	up) wpctl set-volume -l 1.0 "$dev" "$steps"%+; send_signal ;;
+	down) wpctl set-volume -l 1.0 "$dev" "$steps"%-; send_signal ;;
+	-h|*) echo "usage: setvol [-m] up|down|mute" >&2; exit 1; ;;
+esac