export UDEV_ROOT=$PWD/udev/
export UDEV_DB=udev.tdb
export UDEV_CONFIG_FILE=replace_test.config
+export UDEV_RULES_FILE=replace_test.rules
export UDEV_PERMISSION_FILE=udev.permissions
export DEVPATH=class/tty/ttyUSB0
export ACTION=add
../udev tty
-ls udev
+ls -l udev
export ACTION=remove
../udev tty
-ls udev
+ls -l udev