RE: [OT] How to extract a BOM archive correctly?
RE: [OT] How to extract a BOM archive correctly?
- Subject: RE: [OT] How to extract a BOM archive correctly?
- From: "Karan, Cem (Civ, ARL/CISD)" <email@hidden>
- Date: Tue, 9 Oct 2007 06:54:15 -0400
- Thread-topic: [OT] How to extract a BOM archive correctly?
Can you point me to where you read this? Finlay Dobbie suggested
something similar to me earlier, but my concern was that there would be
file checksums, etc. stored in there. Are you sure that only what you
have down below is actually put into a BOM archive?
Thanks,
Cem Karan
-----Original Message-----
From: Eduard de Jong [mailto:email@hidden]
Sent: Saturday, October 06, 2007 5:50 PM
To: Karan, Cem (Civ, ARL/CISD)
Cc: Xcode Users
Subject: Re: [OT] How to extract a BOM archive correctly?
You are right, the man pages are very thin on actual data on the format
of the file.
The way to make a bom file, which they suggest is to create a directory
structure with all names, owner id, group id and acsess bits set and
then feed that into mkbom. As i understand it, none of these files need
to be present with actual data to make a bom.
One aproach could be to use a shell script to parse the output of lsbom
to reconstruct the file system is specifies with empty files, apply your
modifications to the result and then get a modified bom with mkbom.
At 01:54 +0100 06-10-2007, Finlay Dobbie wrote:
>On 05/10/2007, Karan, Cem (Civ, ARL/CISD) <email@hidden> wrote:
>> I've read the man pages before, but they aren't specifications; that
>> is, if I write a tool that is designed to parse a BOM file, I need
>> to know what the different bytes are that it sees. I can reverse
>> engineer this, but that can lead to errors that I would prefer to
>> avoid. The man pages for bom, lsbom, and mkbom (at least on my
>> machine, a fairly stock 10.4.10 machine) don't give enough
>> information on this for me to write a tool. Basically, I'm looking
>> for a spec like you'd find if you were trying to create a new jpeg
>> library; you need more than what help files for your favorite jpeg
>> viewer provide. In the same way, I need more than what the man/info
pages provide.
>
>There is no such specification, it is a private file format. You could
>always just parse the output of lsbom, which will give you what you
>need.
>
> -- Finlay
--
Eduard
"E por se movo"
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