[Dev] constructing a USB media upload and download device
quiliro at congresolibre.org
Mon Oct 15 18:41:21 GMT 2012
I have successfully used devmon for automatically mounting a USB memory,
copying a directory to it and then unmounting it. It works correctly as
root user with the following command:
devmon --exec-on-drive "cp -r /home/quiliro/media %d ; umount %d"
I would like devmon to do that on a specific USB port. On another
specific port, I would like to do the opposite copy operation:
devmon --exec-on-drive "cp -r %d/media /home/quiliro/ ; umount %d"
I understand that can be done by adding a udev rule. I found the
specifications of the ports by using:
udevadm info -a -p $(udevadm info -q path -n /dev/sdb1)
after plugging in any USB memory to both ports:
KERNELS=="2-1" for the right USB port
KERNELS=="2-2" for the left USB port
The point is not to recognize a USB memory specific product id or device
id, but to recognize the specific port it was connected to.
So I suppose I need to create a udev rule. I think I have to assign a
symlink to the USB memories connected to the left port and another to
the right port. Then, I should use these commands:
devmon --exec-on-device /dev/right_USB "cp -r /home/quiliro/media %d ;
devmon --exec-on-device /dev/right_USB "cp -r %d/media /home/quiliro/ ;
Please suggest the rule I should use and the appropiate devmon command.
If no one is able to answer this question, please guide me to a udev
rule forum. Thank you.
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