What Are Packages?
Application software is delivered in units called packages. A package is a collection of
files and directories that are required for a software product. A package is
usually designed and built by the application developer after completing the development of
the application code. A software product needs to be built into one or
more packages so that it can easily be transferred to a distribution medium.
Then, the software product can be mass produced and installed by administrators.
A package is a collection of files and directories in a defined format.
This format conforms to the application binary interface (ABI), which is a supplement
to the System V Interface Definition.