[COFF] Shell script advice: using 'dd' to write multiple media

[steve jenkin]

Dave,

I’ve tried doing the ‘dd’ in a for or while loop many ways, many times.

Perhaps you could write & yesy a little demo script for me.

Say, “ls -1 | for (); do dd bs=10b; done”

cheers
steve

> On 27 Jun 2023, at 09:21, Dave Horsfall <dave at horsfall.org> wrote:
> 
> Sounds like you want to put "dd" into a loop, driven by the block size and 
> the media size, then using the "iseek" option on the input file to burrow 
> through it.
> 
> I would use "expr" for the arithmetic because I've never bothered to
> learn the Bash syntax :-)
> 
> Or have I missed something?
> 
> -- Dave

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Steve Jenkin, IT Systems and Design 
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