I have a UPS attached via USB port to my Linux machine. Unfortunately the UPS is unsupported and doesn't show up as a recognized device. However it DOES show up correctly with the lsusb command.
I'd like to read the battery status from my UPS via a simple bash script (triggered by cron for example). I don't want a fully functional script as it would require to know the protocol of the specific UPS; I just want to create a script to write raw commands and read raw responses to/from the UPS given the known USB address, then it will be up to me to encode the actual command and parse the response.
You might be able to use the normal echo command to send strings directly to a device, like:
echo "some command" > /dev/usbXXX
To get the output you might be able to just read from it using e.g. cat:
cat /dev/usbXXX | grep "what you're looking for"