dcfldd – enhanced version of dd

The biggest let down of dd is for me lack of any kind of progress bar. This tool addresses that issue

dcfldd if=/dev/sda hash=md5,sha256 hashwindow=20G md5log=md5.txt sha256log=sha256.txt \
       hashconv=after bs=512 conv=noerror,sync split=20G splitformat=aa of=sda.dd

example:
# dcfldd if=Backup.img of=/dev/mmcblk0
253952 Blocks (7936Mb) written.

 

More info here.

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