cannot add sudo add-apt-repository ppa:kubuntu-ppa/backports in ubuntu 16.04
62855
sudo add-apt-repository throws an exception
103929
sudo apt upgrade error 18.04 (Broken Packages)
155918
What information do I need to solve an APT dependency issue?
108176
Ubuntu 16.04 broken kernel packages won't let me install or remove anything with apt-get
121470
How to install 'add-apt-repository' using the terminal?
49830
Is `sudo pip install` still a broken practice?
43579
I cannot install new packages: "Could not get lock /var/lib/dpkg/lock"
81853
W:Skipping acquire of configured file 'main/binary-1386/Packages' as repository... doesn't support architecture '1386'
61177
How to set up an APT repository?
95210
APT wedged by kernel version mismatch
118864
What exactly does sudo apt-get -f install do?
64509
Can't update from official repositories [Error 409]
95593
sudo apt-get update returns an error
39582
Difference between "ppa-purge" and "add-apt-repository -r"?
6945
How to add a PPA on a server?
3298
How do I resolve unmet dependencies after adding a PPA?
115896
How can I install the $0 applications from the Ubuntu Software Center with apt-get?