I have got the following code

sudo apt-get upgrade

Which, after the download was completed, entered into a page that asks for configuration settings when I worked on a terminal , I was working with another software. I created a button that made the terminal hang up.

I closed the terminal and re-entered the code and made the following error:

E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.

Then I stopped it.

Now I use Ubuntu software to install another package. But it not install anything and report this error:

authentication is required to install, update, or remove packages

incorrect permissions on / usr / lib / policykit-1 / polkit-agent-helper-1 (needs to be setuid root)

I can't open the file to the path.

Also synaptic is disabled.

I have a whole set of software that I can not install over again on Ubuntu and change Ubuntu.

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