diff --git a/buzzer.sh b/buzzer.sh
index 6b5177e..5d2e5dc 100755
--- a/buzzer.sh
+++ b/buzzer.sh
@@ -3,66 +3,64 @@
 
 configfile="config.json"
 
-cmdjq="$(command -v jq)"
-if [ -z "$cmdjq" ]; then
+if [ -z "$(command -v jq)" ]; then
 	echo "Missing \"jq\"!"
 	exit 1
 fi
 
-cmdgpio="$(command -v gpio)"
-if [ -z "$cmdgpio" ]; then
+if [ -z "$(command -v gpio)" ]; then
 	echo "Missing \"gpio\"!"
 	echo "This is a part of WiringPi-Package."
 	exit 1
 fi
 
-player="$($cmdjq -r ".player" < $configfile)"
+player="$(jq -r ".player" < $configfile)"
 if [ -z "$(command -v $player)" ]; then
 	echo "Missing \"$player\"!"
 	exit 1
 fi
 
-buzzergpio="$($cmdjq -r ".buzzer | .buzzergpio" < $configfile)"
-strobegpio="$($cmdjq -r ".buzzer | .strobegpio" < $configfile)"
-swupgpio="$($cmdjq -r ".swupgpio"  < $configfile)"
-swdowngpio="$($cmdjq -r ".buzzer | .swdowngpio" < $configfile)"
+buzzergpio="$(jq -r ".buzzer | .buzzergpio" < $configfile)"
+strobegpio="$(jq -r ".buzzer | .strobegpio" < $configfile)"
+swupgpio="$(jq -r ".swupgpio"  < $configfile)"
+swdowngpio="$(jq -r ".buzzer | .swdowngpio" < $configfile)"
 
-playerparam="$($cmdjq -r ".playerparam" < $configfile)"
-playerloop="$($cmdjq -r ".buzzer | .playerloop" < $configfile)"
+playerparam="$(jq -r ".playerparam" < $configfile)"
+playerloop="$(jq -r ".buzzer | .playerloop" < $configfile)"
 
-pgrepplayer="$($cmdjq -r ".pgrepplayer" < $configfile)"
+pgrepplayer="$(jq -r ".pgrepplayer" < $configfile)"
 
-pollingtime="$($cmdjq -r ".buzzer | .pollingtime" < $configfile)"
-buzzertimeout="$($cmdjq -r ".buzzer | .buzzertimeout" < $configfile)"
-strobeduration="$($cmdjq -r ".buzzer | .strobeduration" < $configfile)"
+pollingtime="$(jq -r ".buzzer | .pollingtime" < $configfile)"
+buzzertimeout="$(jq -r ".buzzer | .buzzertimeout" < $configfile)"
+strobeduration="$(jq -r ".buzzer | .strobeduration" < $configfile)"
 
-volumetimeout="$($cmdjq -r ".buzzer | .volumetimeout" < $configfile)"
-volumedelay="$($cmdjq -r ".buzzer | .volumedelay" < $configfile)"
-volumemax="$($cmdjq -r ".buzzer | .volumemax" < $configfile)"
+volumetimeout="$(jq -r ".buzzer | .volumetimeout" < $configfile)"
+volumedelay="$(jq -r ".buzzer | .volumedelay" < $configfile)"
+volumemax="$(jq -r ".buzzer | .volumemax" < $configfile)"
 
 playerfull="$(command -v $player) $playerparam"
 cmdamixer="$(command -v amixer)"
 
-$cmdgpio mode $buzzergpio in
+gpio mode $buzzergpio in
 
-$cmdgpio mode $strobegpio out
-$cmdgpio write $strobegpio 1
+gpio mode $strobegpio out
+gpio write $strobegpio 1
 
-$cmdgpio mode $swdowngpio in
-$cmdgpio mode $swupgpio in
+gpio mode $swdowngpio in
+gpio mode $swupgpio in
 
 volumevalue=0
 $cmdamixer -q -c 2 sset 'Speaker' $volumevalue%
 
 while true; do
 
-	buzzerstat="$($cmdgpio read $buzzergpio)"
-	swupstat="$($cmdgpio read $swupgpio)"
-	swdownstat="$($cmdgpio read $swdowngpio)"
+	buzzerstat="$(gpio read $buzzergpio)"
+	swupstat="$(gpio read $swupgpio)"
+	swdownstat="$(gpio read $swdowngpio)"
 	
 	if [ "$buzzerstat" -eq 0 ] && [ "$swupstat" -eq 0 ]; then
 		~/RandomVideo/RandomVideo.sh buzzer
-		$cmdgpio write $strobegpio 0; sleep $strobeduration; $cmdgpio write $strobegpio 1 &
+		gpio write $strobegpio 0; sleep $strobeduration; gpio write $strobegpio 1 &
 		sleep $buzzertimeout
 
 	elif [ "$swupstat" -eq 1 ]; then
@@ -74,7 +72,7 @@ while true; do
 		$playerfull $playerloop ~/RandomVideo/onair.mp4 &
 
 		while [ "$swupstat" -eq 1 ]; do
-			swupstat="$($cmdgpio read $swupgpio)"
+			swupstat="$(gpio read $swupgpio)"
 			sleep $pollingtime
 		done
 
@@ -85,7 +83,7 @@ while true; do
 		while [ "$volumevalue" -lt "$volumemax" ] && [ "$buzzerstat" -eq 1 ]; do
 			volumevalue=$((volumevalue + 1))
 			$cmdamixer -q -c 2 sset 'Speaker' $volumevalue%
-			buzzerstat="$($cmdgpio read $buzzergpio)"
+			buzzerstat="$(gpio read $buzzergpio)"
 			sleep $volumetimeout
 		done
 		
@@ -96,7 +94,7 @@ while true; do
 		while [ "$volumevalue" -gt 0 ] && [ "$swdownstat" -eq 0 ]; do
 			volumevalue=$((volumevalue -1))
 			$cmdamixer -q -c 2 sset 'Speaker' $volumevalue%
-			swdownstat="$($cmdgpio read $swdowngpio)"
+			swdownstat="$(gpio read $swdowngpio)"
 			sleep $volumetimeout
 		done