3 ms·

Doesn't pv give you an ETA if the output device size is known? I recently did pv </dev/zero >/dev/sdb to zero a drive and I'm pretty sure it gave me an ETA..

• wyldfire 5y ago
  That seems to be exactly why it's endorsed. > For larger disks, an ETA proves invaluable. I like pv for this task.
• LeoPanthera 5y ago
  You have to supply the input device (or file) as an argument, instead of using stdin. Then it will read the size of the device/file. As far as I know, this does not work for the output device, and the size must be specified. So: pv /path/file >/dev/device Will give you an ETA.
  • hddqsb 5y ago
    On Linux, pv can actually determine the size of the output device (using lseek on stdout), so `pv </dev/zero >/dev/sdb` does give a correct ETA (tested with pv 1.6.6 on Debian).