[Adium-devl] Let's abandon disk images

[Peter Hosey]

On Mar 29, 2007, at 20:40:27, Chris Forsythe wrote:
> 1) Internet-enabled disk images are what Apple recommends.

Yeah, but their advantage over other disk images is that they behave  
as archive files than disk images. Why not just use an archive file  
at that point?

> 3) Rogue Amoeba used to have problems with distribution until they  
> switched to internet-enabled disk images. I do not know what they  
> switched from

Standard disk images, according to Paul Kafasis' email to MacSB.

> 4) With bz compressed disk images, what's the real difference here?  
> You're saying it's bigger, but is it really that much bigger?

hdiutil create -format UDBZ -srcdir "Adium $VERSION" -volname "Adium  
$VERSION" "Adium-$VERSION.dmg"
...............................................
created: /Volumes/RAM Disk/Adium-1.0.2.dmg
___
du -b Adium-1.0.2.dmg                                     %/Volumes/ 
RAM Disk(0)
14598891        Adium-1.0.2.dmg
___
tar cjf "Adium-$VERSION.tbz" "Adium $VERSION"             %/Volumes/ 
RAM Disk(0)
___
du -b Adium-1.0.2.tbz                                     %/Volumes/ 
RAM Disk(0)
12818271        Adium-1.0.2.tbz

So the tbz is 87.8% of the dmg. The reason for this is that hdiutil  
uses blocksize=100k, whereas tar uses blocksize=900k (that is, bzip2  
-1 vs bzip2 -9).
___________________________________
\ Peter Hosey / boredzo at adiumx.com
PGP public key ID: C6550423 (since 2007-01-01)


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