bmaptool
Create or copy block maps intelligently (designed to be faster than cp or dd). tldr-pages
On several platforms
Several platforms
Output a blockmap file from image file
bmaptool create --output blockmap.bmap source.imgIdentifyCopy an image file into sdb
bmaptool copy --bmap blockmap.bmap source.img /dev/sdbIdentifyCopy a compressed image file into sdb
bmaptool copy --bmap blockmap.bmap source.img.gz /dev/sdbIdentifyCopy an image file into sdb without using a blockmap
bmaptool copy --nobmap source.img /dev/sdbIdentify