Dear Madam/Sir. I am writing to seek help from you over a rule. This is my rule IMPORT{program}="/bin/echo iii=0" KERNEL=="sdb", SUBSYSTEM=="block", IMPORT{program}="/sbin/scsi_id -g -u -x -a -s %p -d $tempnode", ENV{ID_SERIAL}=="360a980006e424539576f57487a4b6232", NAME="sdz$ENV{iii}", ENV{iii}="1" KERNEL=="sdc", SUBSYSTEM=="block", IMPORT{program}="/sbin/scsi_id -g -u -x -a -s %p -d $tempnode", ENV{ID_SERIAL}=="360a980006e424539576f57487a4b6232", NAME="sdz$ENV{iii}", ENV{iii}="2" KERNEL=="sdd", SUBSYSTEM=="block", IMPORT{program}="/sbin/scsi_id -g -u -x -a -s %p -d $tempnode", ENV{ID_SERIAL}=="360a980006e424539576f57487a4b6232", NAME="sdz$ENV{iii}", ENV{iii}="3" KERNEL=="sde", SUBSYSTEM=="block", IMPORT{program}="/sbin/scsi_id -g -u -x -a -s %p -d $tempnode", ENV{ID_SERIAL}=="360a980006e424539576f57487a4b6232", NAME="sdz$ENV{iii}", ENV{iii}="4" It is working and I can get /dev/sdz0, /dev/sdz1, /dev/sdz2, and /dev/sdz3. But, could you tell me how to let rule increasing ENV{iii} automatically? Here I have to set ENV{iii}="1", ENV{iii}="2", ENV{iii}="3", and ENV{iii}="4" manually. By any change, could you tell me a single line rule, just like the following format, to realize my rule's function? KERNEL=="sd*", SUBSYSTEM=="block", IMPORT{program}="/sbin/scsi_id -g -u -x -a -s %p -d $tempnode", ENV{ID_SERIAL}=="360a980006e424539576f57487a4b6232", NAME="sdz <automatically increase number by 1>" Thanks for your help in advance. Best regards, Yan Zhang -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html