Single

src/freedombone-app-microblogpub

       echo 'StandardError=syslog';
       echo '';
       echo '[Install]';
-      echo 'WantedBy=multi-user.target'; } >> "/etc/systemd/system/microblogpub.service"
+      echo 'WantedBy=multi-user.target'; } > "/etc/systemd/system/microblogpub.service"
     systemctl enable microblogpub
     chown -R microblogpub:microblogpub "/etc/microblogpub"
     systemctl start microblogpub

src/freedombone-template

     echo "      echo 'StandardError=syslog';"
     echo "      echo '';"
     echo "      echo '[Install]';"
-    echo "      echo 'WantedBy=multi-user.target'; } >> \"/etc/systemd/system/${app_name}.service\""
+    echo "      echo 'WantedBy=multi-user.target'; } > \"/etc/systemd/system/${app_name}.service\""
     echo "    systemctl enable ${app_name}"
     if [ "$app_dir" ]; then
         echo "    chown -R ${app_name}:${app_name} \"${app_dir}\""