Linux/Backup

DD

dd if=/dev/sda | gzip > image.dd.gz

gzip -c < /dev/hda1 > /tmp/partition_image.gz

dd if=/dev/sda of=bootloader.img bs=446 count=1

fdisk -lu
dd if=/dev/sda of=mbr.img bs=512? count=1? 63?

netcat -l 5555 | dd of=image.dd.gz

dd if=/dev/sda | pv | pigz --best | netcat $TargetIP 5555

while /bin/true; do sleep 5; kill -USR1 `pidof dd`; done

or

watch -n N kill -USR1 `pidof dd`

dd if=/dev/sda | pv | dd of=image.dd

pv -s 60G    -> for estimate

mkdir /mnt/loop
mount -o loop image.dd /mnt/loop
umount /mnt/loop

dd if=/dev/random bs=1M count=256 | gzip >./256-MB-random-data.bin