[Wolves] dd usage?

Kevanf1 kevanf1 at gmail.com
Fri Jun 6 11:28:24 UTC 2014

I like the clean sound of this 'pv' command.  Let me have a play with
'dd' first though.  I want to learn how to crawl before I attempt a
100 metre sprint :D  (I never was any good at sports at school

On 6 June 2014 01:35, Andy Smith <andy at strugglers.net> wrote:
> Hello,
> On Wed, Jun 04, 2014 at 10:38:01PM +0100, Chris Ellis wrote:
>> Another trick to know when using dd, is that you can send the USR1 signal
>> to it to show the progress, by default dd will print nothing until it
>> completes, in another terminal you can execute:
>> pkill --signal USR1 ^dd
>> This will make dd display its progress (to the terminal dd is running in).
> For tasks like this I like using "pv" instead of "dd", as it
> presents a nifty little progress bar that says how fast it's going
> and when you can expect it to complete. e.g.
> # pv -s 60g < /dev/sda > /dev/sdb
> (you can specify buffer size with -B, but I never do because the
> default is something a lot saner than 1 byte!)
> As it's a clean filter of stdin/out it's a neat drop-in replacement
> for things like "dd" or "cp" in a lot of cases.
> "dd" is of course present everywhere and has many more obscure swiss
> army knife options… :)
> Cheers,
> Andy
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