In the Ubuntu Software Center, there are lots of $0 apps that I can 'purchase': for example:
As these applications are free (as in beer), I wonder how I can install them using
First the rant: you made me use the USC!
Now the answer: Not all the software included in the USC can be distributed, the same way as free (as freedom) applications. These are the so called privative apps. These apps are not included in the regular Ubuntu repositories, nor they are accessible through normal software channels, but trough repositories called private/commercial PPA's, that needs authentication, which is managed by the USC.
These mechanisms are hidden from the normal user, but since the USC is a free (as freedom) application, you can dissect it and see it's internals, though truth be told, just launching USC from the terminal suffice. As example I'll be showing the repository of 'crazytoad':
As you can see
So, how to install free as beer apps using apt-get? You first have to find out the repository:
and login using the Ubuntu Software Center. Otherwise, you can not.
After checking my mail, I found out the authentication credentials to add to my sources.list:
I just have to add the GPG key, modify the