How to detect programatically if a USB device is is plugged-in / plugged out?

franc · 02-01-2007, 12:41 AM

Hi all,

How can I programatically detect if any USB drive (say thump drive) is plugged-in or plugged out at any time?
Also get details on the device plugged-in?
Can I use udev rules to achieve this?
The goal is to get access to the contents within the program.

Thanks for your help.
Franc

shawnbishop · 02-01-2007, 01:19 AM

Hi

I suppose you could use the "lsusb" command, which then references to the /dev/sd... device.

Cheers

tredegar · 02-01-2007, 03:49 AM

I think you can do this with udev rules. See this link:
http://www.reactivated.net/writing_u...l#external-run

nx5000 · 02-01-2007, 04:01 AM

Both method would work.
As you are using udev, you always know what will be the name of the device node in /dev.
Then this is ok (for shell scripts) :
[ -b /dev/sda ] && echo "sda present" || echo "sda not present"