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I'm testing PPAs, so I commonly use ppa-purge, that restores my default versions. But I always have problem with the ppa name. What do I need to put as argument for ppa-purge?

I always used my browser to check name on launchpad, but what about when I'm without internet and I can't start X. Org server?

For xorg-edgers I know that ppa:xorg-edgers/ppa what about others? Let's say, I know that I have PPA of X-Updates. How do I find out the name of this PPA so I could use with ppa-purge, without using browser

So the name should be something like ppa:NAME/ppa? How to get this NAME?

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This command will list all the PPA repositories you have configured

grep ppa /etc/apt/sources.list /etc/apt/sources.list.d/*

Alternatively, you can check the repository of a given package

apt-cache policy [package-name]
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    Thanks for answer, but I still don't get the "string" I need. Line :deb http://ppa.launchpad.net/zeitgeist/ppa/ubuntu lucid main #Zeitgeist PPA helps me nothing in my case... – gsedej Mar 31 '11 at 16:14
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    In this case the full repository name can be shortened to ppa:zeitgeist/ppa. Hope you see the pattern. – Adam Byrtek Mar 31 '11 at 21:06
  • @AdamByrtek how did you know that? – Dims Aug 9 '20 at 17:06
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    Sorry to warm up this 10 years old topic. However, I am stuck at the exactly same situation, I am unable to identify the necessary "PPA name" for ppa-purge. In my case, I want to purge the official winehq stable PPA for Ubuntu 18.04? The original PPA install link was sudo add-apt-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ bionic main' Any help is welcome. ;-) – Clemens Apr 29 at 20:02
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I recommend using "Y PPA Manager" which has (among others) one nifty feature: it can list all packages from a ppa enabled on your computer.

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    He probably also meant "without using a GUI" since he mentioned xorg-edgers PPA. – LiveWireBT Jul 17 '13 at 10:43

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