Unifies the command interface for using yum and apt on Linux, Fink and MacPorts on OS X

The following commands are provided:

• pkg-find-available - list matching packages that are available for installation

• pkg-find-installed - list matching packages that are installed

• pkg-install - install the named package

• pkg-install-file - install a package from a file

• pkg-list-contents - list the files contained in an installed packages

• pkg-provides - which pakage installed the given file?

• pkg-uninstall - remove the named pakage from the system

• Fink

• Mac Ports

• YUM

• github.com/mxcl/homebrew