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obj: concept
wiki: https://en.wikipedia.org/wiki/Loop_device
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# Loop Device
In Unix-like operating systems, a loop device is a pseudo-device that makes a computer file accessible as a block device. Thus, if the file contains an entire file system, the file may then be mounted as if it were a disk device.

In [Linux](Linux.md) loop devices can be managed with the [losetup](../applications/cli/system/losetup.md) command.