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Using the apt-get application is the quickest way to find and install debian packages. The installation part is done by an application named dpkg. Dpkg doesn’t have to be used by apt-get, you can use it manually as well.

From the man dpkg command:

dpkg - a medium-level package manager for Debian

Whatever that means.

In keeping with GNU/Linux system security, only the superuser can use the dpkg application. Dpkg is a typical GNU/Linux application that is controlled by command-line switches. Possibly the most common use of dpkg is to install a local .deb file.

To install a .deb file, become root and use the command:

dpkg -i filename.deb

Dpkg can also be used to:

  • dpkg –unpack: unpacks the file but does not install it
  • dpkg –configure: presents whatever configuration options are available for the package
  • dpkg –remove: removes a package

Some of the package manipulation commands are actually carried out by an application called dpkg-deb. In those cases, dpkg just acts as a front end to dpkg-deb and passes the commands to it.

Dpkg-deb can also be used to manipulate .deb files. Some of the more useful commands of dpkg-deb are:

dpkg-deb –show filename.deb

Debian Package Managment