HowTo Uninstall Unwanted Program in Ubuntu

OK, so you want to uninstall unwanted program(s) in Ubuntu? After you try it from GUI ways (Application>Add/remove or System>Administration>Synaptic Package Manager) you failed (the program is not listed there).
Then you need to do it from command line (Terminal) at last:
sudo apt-get remove pdfcrack (uninstall program called pdfcrack)

or

sudo apt-get --purge remove motion (uninstall program called motion including the configuration files)

Happy uninstalling!

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