How do I find the device node file for a USB device in Linux?

Question

I've bought an X10 Home Automation USB interface: the CM15.

This is the information lsusb gives:

skerit@KIP-DU-SKER:~$ lsusb
Bus 008 Device 002: ID 0bc7:0001 X10 Wireless Technology, Inc. ActiveHome (ACPI-compliant)

But this tells me nothing about where the device file is! How can I find that, or create one myself?

Solution

Device nodes are created by the kernel automatically (or by udev in older distributions). Udev also creates descriptive links under /dev/disk/by-*/ and similar.

If it's a storage device, lsblk -f or sudo blkid should list it.

Serial devices are usually ttyUSBnum or ttyACMnum.

For everything else, check the system log in dmesg.