I would like to know what causes Ubuntu and/or Synaptic to recognize a program as being installed.
- Is there an equivalent of the Windows registry that an application has to have a entry in?
- Does a program have to be installed from a .*deb package to be classified as installed and show up in Synaptic?
- And where are files for an installed program usually kept? I know that configuration files are kept in
/home/x/but not much else.