Launchpad PPA Repositories is a useful non-ubuntu personal third-party repository that can be easily installed with third-party software.
However, when running the Apt-Repository command, it is sometimes suggested that the command does not exist. In this case, apt-get Add-apt-Repository is not possible!
The solution is to install Software-Properties-common. Input command:
apt-get install software-properties-commonRead More:
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