dd.md

dd

Track transfer progress

Option 1: dd status=progress

sudo dd if=source of=dest status=progress

Option 2: kill

One-shot

sudo kill -USR1 $(pgrep ^dd)

Repeat on 5 second interval

watch -n5 'sudo kill -USR1 $(pgrap ^dd)'

Backup and compress (in parallel) a disk image

Requires pzstd, pixz, or pigz, depending of the type of compression used.

sudo dd if=/dev/DEVICE bs=1M status=progress | pzstd > IMAGE.img.zst

DEVICE represents the device name, e.g. sda or mmcblk0, and IMAGE is the desired name to call the compressed image.

Write (in parallel) compressed backup image to disk

Requires pzstd, pixz or pigz, depending of the type of compression used.

sudo sh -c "pzstd -d < IMAGE.img.zst > /dev/DEVICE" && sync

DEVICE represents the device name, e.g. sda or mmcblk0, and IMAGE is the desired name to call the compressed image.