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I know how to add a PPA to Ubuntu. But I don't know what this ppa:x/y PPA format means!

For instance :

sudo add-apt-repository -y ppa:videolan/stable-daily

What is videolan and what is stable-daily ?

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up vote 14 down vote accepted

This is the format:


In your case:


This user has two package archives:

enter image description here

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In ppa:X/Y the value X is the user name of the PPA's owner at, and Y is the name of the PPA.

The PPA's web page is always at

and the package archive is at

For example for


the web page is

and the package archive is
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