root@TOPMO3:/etc/udev/rules.d# udev /block/hdb
bash: udev: command not found
root@TOPMO3:/etc/udev/rules.d# udevtest /block/hdb
main: looking at device '/block/hdb' from subsystem 'block'
udev_rules_get_name: reset symlink list
udev_rules_get_name: add symlink 'cdrom'
udev_rules_get_name: rule applied, 'hdb' becomes 'hdb'
udev_rules_get_name: add symlink 'cdrom'
udev_rules_get_name: add symlink 'cdrom0'
run_program: '/lib/udev/ata_id --export /dev/.tmp-3-64'
run_program: '/lib/udev/ata_id' (stdout) 'ID_TYPE=cd'
run_program: '/lib/udev/ata_id' (stdout) 'ID_MODEL=CRD-8480C'
run_program: '/lib/udev/ata_id' (stdout) 'ID_SERIAL=19990812'
run_program: '/lib/udev/ata_id' (stdout) 'ID_REVISION=1.04'
run_program: '/lib/udev/ata_id' (stdout) 'ID_BUS=ata'
run_program: '/lib/udev/ata_id' returned with status 0
udev_rules_get_name: add symlink 'disk/by-id/ata-CRD-8480C_19990812'
run_program: '/lib/udev/path_id /block/hdb'
run_program: '/lib/udev/path_id' (stdout) 'ID_PATH=pci-0000:00:1f.1-ide-0:1'
run_program: '/lib/udev/path_id' returned with status 0
udev_rules_get_name: add symlink 'disk/by-path/pci-0000:00:1f.1-ide-0:1'
udev_device_event: device '/block/hdb' already in database, validate currently present symlinks
udev_node_add: creating device node '/dev/hdb', major = '3', minor = '64', mode = '0600', uid = '0', gid = '6'
udev_node_add: creating symlink '/dev/cdrom' to 'hdb'
udev_node_add: creating symlink '/dev/cdrom0' to 'hdb'
udev_node_add: creating symlink '/dev/disk/by-id/ata-CRD-8480C_19990812' to '../../hdb'
udev_node_add: creating symlink '/dev/disk/by-path/pci-0000:00:1f.1-ide-0:1' to '../../hdb'
main: run: 'socket:/org/kernel/udev/monitor'