CmdID

CmdID / Commands

losetup

Associate a loopback device with a file, or show current file (if any) associated with a loop device. toybox

On Linux

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Linux

from the toybox, 0BSD
losetup [-cdrs] [-o OFFSET] [-S SIZE] {-d DEVICE...|-j FILE|-af|{DEVICE FILE}}
-aIterate through all loopback devices
-fFind first unused loop device (may create one)
-j FILEIterate through all loopback devices associated with FILE
-cCheck capacity (file size changed)
-d DEVDetach loopback device
-DDetach all loopback devices
-sShow device name (alias --show)
-o OFFStart association at offset OFF into FILE
-rRead only
-S SIZELimit SIZE of loopback association (alias --sizelimit)

Linux

from tldr-pages, CC BY 4.0

Set up and control loop devices.

List loop devices with detailed info

losetup --allIdentify

Attach a file to a given loop device

sudo losetup /dev/loop /path/to/fileIdentify

Attach a file to a new free loop device and scan the device for partitions

sudo losetup --show --partscan --find /path/to/fileIdentify

Attach a file to a read-only loop device

sudo losetup --read-only /dev/loop /path/to/fileIdentify

Detach all loop devices

sudo losetup --detach-allIdentify

Detach a given loop device

sudo losetup --detach /dev/loopIdentify