RE: enhancement request for a long word byte swap option for 'dd'

[Mike Lockhart]

Bob,

Works a treat!  I guess I need to add 'perl' to my toolbox.

Many thanks & regards

Mike Lockhart
Tier 2 Analyst
713-839-3188
address@hidden

-----Original Message-----
From: Bob Proulx [mailto:address@hidden 
Sent: Friday, June 30, 2006 7:24 PM
To: Mike Lockhart
Cc: address@hidden
Subject: Re: enhancement request for a long word byte swap option for
'dd'

Mike Lockhart wrote:
> What I'm looking for is an end-to-end swap.  e.g. swap 0000f841 to
> 41f80000 so that 'od' will return 3.1000000e+01

What options are you using to 'od'?

> I can write a byte-swap function in awk, but I can't translate the
> floats into something I can understand - it would require getting into
> the bit world:

Is perl a possibility?  Because the perl snippet I posted should work
fine if perl is available.  It is using only basic perl functionality.

  printf "abcdefghijklmno\n" | od -tx
  0000000 64636261 68676665 6c6b6a69 0a6f6e6d

  printf "abcdefghijklmno\n" \
  | perl -e 'while (sysread(STDIN,$d,4)){print
pack("N",unpack("V",$d));}' \
  | od -tx
  0000000 61626364 65666768 696a6b6c 6d6e6f0a

There you go...

Bob
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