sudo apt-get update throwing error

Question

Recently I accidentally changed the permission of all file in the root directory to world readable/writable on my ubuntu 16.04. Somehow I managed to solve the majority of the problem but stuck with wifi module. So I thought of upgrade but having the following issue with "sudo apt-get update" commands: error part 1

error part 2

error part 3

E: Problem executing scripts APT::Update::Post-Invoke-Success 'if /usr/bin/test -w /var/cache/app-info -a -e /usr/bin/appstreamcli; then appstreamcli refresh > /dev/null; fi'
E: Sub-process returned an error code

Any help is much appreciated!

Please copy and paste those errors into your question, it makes it more search ready. — George Udosen, Oct 24 '17 at 16:50

score 1 · Accepted Answer · answered Oct 24 '17 at 16:57

1

There's two links that you should take a look at. The first addresses your update process:

appstreamcli hanging with 100% CPU usage during update

The second addresses changing the root permissions:

What if I accidentally run command "chmod -R" on system directories (/, /etc, ...)

answered Oct 24 '17 at 16:57

Charles Green

21,339

thanks @Charles Green , first link solved the problem. thanks a lot :) – Manish Singla Oct 24 '17 at 17:08

sudo apt-get update throwing error

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