Package File (OS X)

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File Format
Name Package File (OS X)
Ontology
Extension(s) .pkg

A Package File is used in Mac OS X as an installation archive of a software package for distribution. Clicking on it on an OS X system will launch the Installer package to extract and install the software.

These files have a .pkg extension, an extension that has also been used for installable packages on a number of other operating systems including SunOS, Unix System V, Symbian, BeOS, and the Apple Newton.

OS X packages are a form of the xar archive format.

A Meta-Package File is another form of OS X package which may contain multiple packages of the single-package format.

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