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How could I let normal user become the owner of the loop devices?

I tried with chown, but whenever the device is being detached with losetup -d if afterward being created then again automatically owned by root. How can I permanently change the ownership?

I'm using Slackware 13.1.

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up vote 1 down vote accepted

Use udev rules. However, on my system the group is set to disk, and you just have to add a user to the disk group to use it. I'm not sure if Ubuntu works this way, but you can check.

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