You could run this before adding the device to store the inital list
in a file:
ls /dev >~/a
And then this after adding the device:
ls /dev | diff -u ~/a -
This should show you in what way the two lists of files differ.
shows the differences between two text files, and flag
-u changes its
output format: lines added will be prefixed with a
+ sign. For
example, if you get the following output (I omitted the diff header):
then it means that the new device that got created is
You can then delete the temporary file
Another way to get the information you are looking for would be to
tail -f /var/log/messages: you should see kernel messages mentioning the new device's appearance and disappearance.