I'd say this script could be of use.
#!/bin/bash
function cleanup() {
if losetup $loopback &>/dev/null; then
losetup -d "$loopback"
fi
}
usage() { echo "Usage: $0 [-s] imagefile.img [newimagefile.img]"; exit -1; }
should_skip_autoexpand=false
while getopts ":s" opt; do
case "${opt}"...
