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How To Find Out To Which PPA Repository A Package Belongs To

There are various reasons why you may need to find out to which PPA a package belongs to, for instance, in case a package in a PPA breaks something on your system, if you want to install a package which is already installed on your computer on some other machine but you don’t know the PPA you’ve used to install it and so on.So here’s a quick tip on how to find out to which PPA a package belongs to. To find out the PPA to which a package belongs to, simply run the following command in a terminal (this only works for packages which are already installed and doesn’t work for packages available in the PPA repository but which are not installed on your system):apt-cache policy PACKAGE_NAMEreplacing “PACKAGE_NAME” with the package you want to find out the PPA for.Example:apt-cache policy oracle-java7-installerHere’s how the command output looks like:As you can see, the command output displays the PPA url, which, right after “ppa.launchpad.net” contains the PPA you’ve used to install the package (“webupd8team/java” in my example above).This, of course, also works with packages from the official Ubuntu repositories as well as packages from non-Launchpad repositories. For instance, here’s how the output of

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