When you do a bitwise copy using the dd tool you will not see any output until it completes or an error occurs.
However, you can send a command signal to the process to have it show its progress so far.

From another terminal, simply call (be root or use sudo):

pkill -USR1 dd

This makes dd write something like this into the terminal it is running in:

388+0 records in
387+0 records out
396288000 bytes (396 MB) copied, 24.9862s, 15.9 MB/s

Arne Hartherz

makandra.com

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Almost 9 years ago

Arne Hartherz

Keywords

linux, unix

License

Source code in this card is licensed under the MIT License.

Async control flow in JavaScript: Promises, Microtasks, async/await

Slides for Henning's talk on Sep 21st 2017.

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Delivering Carrierwave attachments to authorized users only

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To attach files to your records, you will need a new database column representing the filename of the file. To do this, add a new migration (rails g migration <name>) with the following content:

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Posted by Arne Hartherz to makandra dev (2011-07-15 10:00)

Show the status of a running dd copy

Related cards:

Understanding sync vs. async control flow

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Summary

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