While updating ubuntu16.04 I got this error how to remove this error.
Hit:1 http://archive.canonical.com/ubuntu xenial InRelease Hit:2 http://in.archive.ubuntu.com/ubuntu xenial InRelease Hit:3 http://security.ubuntu.com/ubuntu xenial-security InRelease Hit:4 http://in.archive.ubuntu.com/ubuntu xenial-updates InRelease Hit:5 http://in.archive.ubuntu.com/ubuntu xenial-backports InRelease Reading package lists... Done Building dependency tree Reading state information... Done All packages are up to date. N: Ignoring file '50unattended-upgrades.ucf-old' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension.
How to resolve it.
We usually get this error when we update from ubuntu14.04 LTS to Ubuntu16.04 LTS.
After we have upgraded our os but some old files entries still remains in file which was suppose to be upgraded but now after upgrade it is not required.
As it is clearly saying that it is getting ignored. Hence just remove it.
$ cd /etc/apt/apt.conf.d $ ls
this will give result soemthing like this
00aptitude 01autoremove 01-vendor-ubuntu 15update-stamp 20dbus 50unattended-upgrades 70debconf 00trustcdrom 01autoremove-kernels 10periodic 20archive 50appstream 50unattended-upgrades.ucf-old 99update-notifier
$ sudo rm 50unattended-upgrades.ucf-old
Check once again now and error will be gone.
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