pv¶

pv - monitor the progress of data through a pipe

This can be used in place of dd or dcfldd in some cases, such as copying disks or files. It's also useful for including with nc so you can see stats about the flow of that pipe.

Examples¶

Show the average growth rate of logs¶

xtail /nail/scribe/buffer/some_service_gnerated | pv -a > /dev/null

Write a disk image to usb¶

This can be used in place of dd if=file of=/dev/disk

## As root
pv ~hoherd/Downloads/ubuntu-16.04.1-desktop-amd64.iso > /dev/rdisk4

Show the number of k8s pods going into NotReady per second¶

kubectl get pods -A --watch-only |
grep --line-buffered NotReady |
pv --line-mode --timer --rate --average-rate --wait --force >/dev/null

See Also¶

• dcfldd
• dd
• ddrescue