A horribly fragile script to collate identifying information for ttyUSB devices. Ad hoc testing on Ubuntu. Please don't use this unless you agree to: (1) Hold me blameless and harmless for anything that goes wrong, AND (2) Share colorful stories about what went wrong in a comment.

ttyUSB_demystify.sh

#!/bin/bash

# Reminder: don't use this.

candidates=`ls /dev | grep ttyUSB`
for targetDevice in $candidates
do
  majMinDevNums=`cat /sys/class/tty/$targetDevice/dev`
  infoLink=`ls -l /sys/dev/char/$majMinDevNums | awk '{print $NF}' | grep -oP '../../\K.*'`
  infoDir=`echo /sys/$infoLink | perl -pe "s|(.*)/[\d-:.]+/$targetDevice/.*|\1|"`

  busnum=`cat $infoDir/busnum` || continue
  devnum=`cat $infoDir/devnum` || continue

  echo $targetDevice $majMinDevNums `lsusb -s $busnum:$devnum`
done