In sxmo_appmenu.sh & sxmo_urlhandler.sh only show entries if program installed

E.g. so if you don't have firefox installed it won't show up in menus

scripts/core/sxmo_appmenu.sh

@@ -35,14 +35,14 @@ programchoicesinit() {
 	elif echo "$WMCLASS" | grep -i "applications"; then
 	# Apps menu
 		CHOICES="
-			Surf            ^ 0 ^ surf
-			Netsurf         ^ 0 ^ netsurf
-			Firefox         ^ 0 ^ firefox
-			Sacc            ^ 0 ^ st -e sacc i-logout.cz/1/bongusta
-			W3m             ^ 0 ^ st -e w3m duck.com
-			Xcalc           ^ 0 ^ xcalc
-			St              ^ 0 ^ st
-			Foxtrotgps      ^ 0 ^ foxtrotgps
+			$(command -v surf       >/dev/null && echo 'Surf        ^ 0 ^ surf')
+			$(command -v netsurf    >/dev/null && echo 'Netsurf     ^ 0 ^ netsurf')
+			$(command -v firefox    >/dev/null && echo 'Firefox     ^ 0 ^ firefox')
+			$(command -v sacc       >/dev/null && echo 'Sacc        ^ 0 ^ st -e sacc i-logout.cz/1/bongusta')
+			$(command -v w3m        >/dev/null && echo 'W3m         ^ 0 ^ st -e w3m duck.com')
+			$(command -v xcalc      >/dev/null && echo 'Xcalc       ^ 0 ^ xcalc')
+			$(command -v st         >/dev/null && echo 'St          ^ 0 ^ st')
+			$(command -v foxtrotgps >/dev/null && echo 'Foxtrotgps  ^ 0 ^ foxtrotgps')
 		"
 		WINNAME=Apps
 	elif echo "$WMCLASS" | grep -i "config"; then
@@ -320,7 +320,7 @@ programchoicesinit() {
 			Scripts              ^ 0 ^ sxmo_appmenu.sh scripts
 			Apps                 ^ 0 ^ sxmo_appmenu.sh applications
 			Files                ^ 0 ^ sxmo_files.sh
-			Maps                 ^ 0 ^ foxtrotgps
+			$(command -v foxtrotgps >/dev/null && echo 'Maps ^ 0 ^ foxtrotgps')
 			Dialer               ^ 0 ^ sxmo_modemdial.sh
 			Texts                ^ 0 ^ sxmo_modemtext.sh
 			Camera               ^ 0 ^ sxmo_camera.sh

scripts/core/sxmo_urlhandler.sh

@@ -24,19 +24,23 @@ fi
 
 COMMAND=$(
 	echo "
-		w3m URL
-		mpv -ao=alsa -v URL
-		mpv -ao=alsa -v --ytdl-format='[height<420]' URL
-		firefox -new-window URL
-		netsurf URL
-		surf URL
-		echo URL | xsel -i
-		youtube-dl -o- URL | mpv -ao=alsa -v -
-		youtube-dl URL
-		curl URL | vis -
-		wget URL
-		aria2c URL
-	" | sed "s/URL/'URL'/g" | sed -e '/^\s*$/d' | sed -e 's/^\s*//' | dmenu -fn Terminus-15 -p "Pipe URL" -c -l 20
+		$(command -v w3m        >/dev/null && echo 'w3m URL')
+		$(command -v mpv        >/dev/null && echo 'mpv -ao=alsa -v URL')
+		$(command -v mpv        >/dev/null && echo 'mpv -ao=alsa -v --ytdl-format='[height<420]' URL')
+		$(command -v firefox    >/dev/null && echo 'firefox -new-window URL')
+		$(command -v netsurf    >/dev/null && echo 'netsurf URL')
+		$(command -v surf       >/dev/null && echo 'surf URL')
+		$(command -v echo       >/dev/null && echo 'echo URL | xsel -i')
+		$(command -v youtube-dl >/dev/null && echo 'youtube-dl -o- URL | mpv -ao=alsa -v -')
+		$(command -v youtube-dl >/dev/null && echo 'youtube-dl URL')
+		$(command -v curl       >/dev/null && echo 'curl URL | vis -')
+		$(command -v wget       >/dev/null && echo 'wget URL')
+		$(command -v aria2c     >/dev/null && echo 'aria2c URL')
+	" |
+		sed "s/URL/'URL'/g" |
+		sed -e '/^\s*$/d' |
+		sed -e 's/^\s*//' |
+		dmenu -fn Terminus-15 -p "Pipe URL" -c -l 20
 )
 [ -z "$COMMAND" ] && exit 1