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Receipts
Maybe a bit off topic, but why are the receipts important? What are they good for?
Receipts
Ditto on the question. What do the receipts do? Let the application/OS know that the package has already been installed?
Receipts
Each receipt package contains a bill of materials file (Archive.bom) that tells you everything that was installed and, most importantly, what the permissions are for each installed file. Disk Utility uses these to repair permissions. See <http://docs.info.apple.com/article.html?artnum=106712> for details. You can also check them out by opening an Archive.bom file using the lsbom command in the Terminal.
Receipts
They're also used in the Software Update mechanism to let you know what's available. When Software Update connects, it essentially interrogates what receipts are on the machine (thus: what is installed) to prompt you what updates there are. So if you don't have iPhoto5 installed, you don't have the receipt for iPhoto5, so it doesn't inform you of any updates. |
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