Date: Sat, 3 May 2003 09:58:11 +1000 (EST) From: Andy Farkas <andyf@speednet.com.au> To: Jerry McAllister <jerrymc@clunix.cl.msu.edu> Cc: freebsd-questions@freebsd.org Subject: Re: Zeros and ones Message-ID: <20030503095717.G67119-100000@hewey.af.speednet.com.au> In-Reply-To: <200305022353.h42NreOY018887@clunix.cl.msu.edu>
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On Fri, 2 May 2003, Jerry McAllister wrote:
> It is easy and convenient to use /dev/zero to write out a number of
> zero bytes to somewhere - as in:
>
> dd if=/dev/zero of=zerofile bs=512 count=1770000
> or
> dd if=/dev/zero of=/dev/da1 bs=512 count=1770000
>
> But, I would like to write all ones - as in 0xff or maybe some
> other pattern - as if there was a /dev/one also.
>
> Is there a nice way to do this using UNIXistic stringing existing
> stuff together? Or do I have to write a little piece of code?
>
> Thanks for any [positive] suggestions.
>
> ////jerry
Play around with jot(1).
--
:{ andyf@speednet.com.au
Andy Farkas
System Administrator
Speednet Communications
http://www.speednet.com.au/
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