Update update_birdnet.sh

scripts/update_birdnet.sh

@@ -2,6 +2,8 @@
 # Update BirdNET-Pi
 source /etc/birdnet/birdnet.conf
 trap 'exit 1' SIGINT SIGHUP
+USER=$(awk -F: '/1000/ {print $1}' /etc/passwd)
+HOME=$(awk -F: '/1000/ {print $6}' /etc/passwd)
 my_dir=$HOME/BirdNET-Pi/scripts
 
 sudo -u${USER} git -C $my_dir stash
@@ -11,7 +13,7 @@ sudo -u${USER} git -C $my_dir stash pop
 sudo ln -sf $my_dir/* /usr/local/bin/
 if ! grep python3 <(head -n1 $my_dir/analyze.py);then
   echo "Ensure all python scripts use the virtual environment"
-  sed -si "1 i\\#\!$(realpath $(dirname $my_dir))/BirdNET-Pi/birdnet/bin/python3" $my_dir/*.py
+  sed -si "1 i\\#\!$HOME/BirdNET-Pi/birdnet/bin/python3" $my_dir/*.py
 fi
 if ! grep PRIVACY_MODE /etc/birdnet/birdnet.conf;then
   sudo -u${USER} echo "PRIVACY_MODE=off" >> /etc/birdnet/birdnet.conf