Custom Device Action to power of a removable device that is not mounted

[Segebodo]

Currently there seems to be no option in the GUI to power off a removable device which is not mouted (safely remove).

The command line option i found in a forum is:

1. look up device name manually

   udisksctl status

2. power off device

   udisksctl power-off -b /dev/sdX​

I would like to simplify this process by adding a custom "Device Action" which does this for the selected device.
I tried to do this but several problems appeared which I am unable to solve.

First of all I was able to create a custom action.
But I didn't know what the paramters (%f, %d, %i) stood for exactly so I tried to write a debug command:

echo "test %f %d %i" &> ~/debug_custom_action.log

This left me with an empty file so I tried to simplify it:

echo "test" &> ~/debug_custom_action.log

This command still leaves me with an empty file if I run it as a device action. If I run it from the Konsole instead it works as expected.

Could anybody please help me figure this out?

References:

• https://techbase.kde.org/Development...Device_Actions
• https://specifications.freedesktop.o...variables.html