On Tue, Oct 28, 2014 at 09:47:19AM -0700, Christopher Head wrote: > On October 25, 2014 4:55:33 AM PDT, James Cameron > wrote: > > I'd set up udev rules to create symbolic links to each. >=20 > I thought FTDI chips had serial numbers in them, in which case you > could just key your udev rules off those? Thanks. You are quite right. Key the rules off the attribute ID_SERIAL_SHORT. Another one of those nearly undiscoverable alternatives. Two ways to discover: - look for and use the symbolic links in /dev/serial/by-id/ - locate the sysfs node for the device, and use "udevadm test" to read all attributes. My suggested misuse of product and vendor id would come in handy for making collections of devices; to bind to specific programs without having to record each of the serial numbers. I also have it in mind for use with Forth (Open Firmware), where the serial number may not be captured because the USB stack is very trim. Product and vendor are already used. --=20 James Cameron http://quozl.linux.org.au/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .