Given a file path, unplug the USB device on which the file is located (the file must be on an USB device !)

echo $(sudo lshw -businfo | grep -B 1 -m 1 $(df "/path/to/file" | tail -1 | awk '{print $1}' | cut -c 6-8) | head -n 1 | awk '{print $1}' | cut -c 5- | tr ":" "-") | sudo tee /sys/bus/usb/drivers/usb/unbind

You have an external USB drive or key. Apply this command (using the file path of anything on your device) and it will simulate the unplug of this device. If you just want the port, just type : echo $(sudo lshw -businfo | grep -B 1 -m 1 $(df "/path/to/file" | tail -1 | awk '{print $1}' | cut -c 6-8) | head -n 1 | awk '{print $1}' | cut -c 5- | tr ":" "-")

Sample Output

alex@alex-G73Sw:~$ echo $(sudo lshw -businfo | grep -B 1 -m 1 $(df "/media/0AF2108209E826EE/test" | tail -1 | awk '{print $1}' | cut -c 6-8) | head -n 1 | awk '{print $1}' | cut -c 5- | tr ":" "-") | sudo tee /sys/bus/usb/drivers/usb/unbind
2-1.3

By: tweet78

2014-04-06 12:06:29

awk cut df echo grep head sudo tail tee tr usb filename filepath

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What Others Think

Nice one, tweet78 !. Works for my USB key and my external HDD.

maze360 · 575 weeks and 1 day ago

I have I/O errors while writing on my usb drive. Thanks to your command, I wrote a script to unplug / replug and resume transfer. Very useful, thanks !

dickbeck · 575 weeks ago

Interesting, but will not work if the file is on a raid 1 array for example (several devices) ...

stevebaker · 574 weeks and 6 days ago

not bad, but I'm sure I could write a shorter command, still working on it !

nullpointer · 574 weeks and 6 days ago

awesome !

changlee · 573 weeks and 5 days ago

Ca marche pas avec toutes les cl?s usb, mais bon boulot tout de m?me

massimo · 573 weeks and 3 days ago

great !

feduser · 573 weeks and 2 days ago

OK on Kali

zaius · 573 weeks and 2 days ago

works well for me on Fedora 20, but, as stated, should be improved to manage raid

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paris77 · 19 weeks and 5 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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