Can I install Cardapio's PPA without using "add-apt-repository"?

Installing Cardapio on a version of Ubuntu that does not support the tool "add-apt-repository" is simple enough:

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1) The first step is to copy/paste this ALL AT ONCE into the terminal and press Enter:

echo "deb http://ppa.launchpad.net/cardapio-team/cardapio-ppa/ubuntu lucid main" | sudo tee -a /etc/apt/sources.list

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2) And then do the same to this line:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 16B94077

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3) Now you can install Cardapio normally through either Synaptics, or Software Center, or the terminal. For the latter, just copy/paste this:

sudo apt-get update; sudo apt-get install cardapio

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And you're done!