root@GL-AXT1800:/mnt/mmcblk0# cat /etc/config/syncthing
config syncthing 'syncthing'
        option enabled '1'
        option gui_address 'http://0.0.0.0:8384'
        # Use internal flash for evaluation purpouses. Use external storage
        #   for production.
        # This filesystem must either support ownership/attributes or
        #   be readable/writable by the user specified in
        #   'option user'.
        # Consult syslog if things go wrong.
        option home '/mnt/mmcblk0/syncthing'
        # Changes to "niceness"/macprocs are not picked up by "reload_config"
        #   nor by "restart": the service has to be stopped/started
        #   for those to take effect
        option nice '10'
        # 0 to match the number of CPUs (default)
        # >0 to explicitly specify concurrency
        option macprocs '0'
        # Running as 'root' is possible, but not recommended
        option user 'syncthing'
root@GL-AXT1800:/mnt/mmcblk0# chmod -R syncthing:syncthing /mnt/mmcblk0/syncthing
chmod: invalid mode 'syncthing:syncthing'
root@GL-AXT1800:/mnt/mmcblk0#