losetup from util-linux 2.27.1

Usage: losetup [options] [<loopdev>] losetup [options] -f | <loopdev> <file> Set up and control loop devices. Options: -a, --all list all used devices -d, --detach <loopdev>... detach one or more devices -D, --detach-all detach all used devices -f, --find find first unused device -c, --set-capacity <loopdev> resize the device -j, --associated <file> list all devices associated with <file> -o, --offset <num> start at offset <num> into file --sizelimit <num> device is limited to <num> bytes of the file -P, --partscan create a partitioned loop device -r, --read-only set up a read-only loop device --show print device name after setup (with -f) -v, --verbose verbose mode -l, --list list info about all or specified (default) -O, --output <cols> specify columns to output for --list -n, --noheadings don't print headings for --list output --raw use raw --list output format -J, --json use JSON --list output format -h, --help display this help and exit -V, --version output version information and exit Available --list columns: NAME loop device name AUTOCLEAR autoclear flag set BACK-FILE device backing file BACK-INO backing file inode number BACK-MAJ:MIN backing file major:minor device number MAJ:MIN loop device major:minor number OFFSET offset from the beginning PARTSCAN partscan flag set RO read-only device SIZELIMIT size limit of the file in bytes For more details see losetup(8).