env=`udevadm info --query=env --path=$dev`
# filter out non-event devices, such as the parent input devices which have no devnode
if ! echo "$env" | str_line_starts 'DEVNAME='; then
continue
fi
env=`udevadm info --query=env --path=$dev`
# filter out non-event devices, such as the parent input devices which have no devnode
if ! echo "$env" | str_line_starts 'DEVNAME='; then
continue
fi