osi-tools/osi-extract

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#!/usr/bin/env bash
# 2018 Luke Shumaker
{
set -euE
source "${BASH_SOURCE[0]%/*}/lib/osi.sh"
arg_image=$1
arg_src=$(realpath -ms -- "$2")
arg_dst=$3
mountpoint=$(mktemp -dt -- "${0##*/}.XXXXXXXXXX")
trap "rmdir -- ${mountpoint@Q}" EXIT
sudo -- ./osi-mount "$arg_image" "$mountpoint" sudo -u "#$UID" -- cp -aT -- "$mountpoint/$src" "$dst"
}