Trying to upgrade to 16.04 from 15.10, but "the required dependency 'apt (>= 1.0.10.2ubuntu2)' is not installed"?

Question

I tried sudo apt-get update, but got

E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)
E: Unable to lock directory /var/lib/apt/lists/
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

Any advice? Let me know if you need any more info.

Solution 1

Problem is solved by manually downloading and updating the apt.

Try to use

1. http://launchpadlibrarian.net/254524267/apt_1.0.10.2ubuntu2_amd64.deb.

If it shows error while updating then run this following deb file first then the previous one.

2. http://launchpadlibrarian.net/254524270/libapt-pkg4.16_1.0.10.2ubuntu2_amd64.deb

then run those commands:

sudo apt-get update 
do-release-upgrade

Solution 2

Did you disable the security update repository (wily-security) by any chance?

If so enable it again and run: apt-get update && apt-get -y install apt.

After this you should have the newer apt version installed. Hence, you should now be able to run do-release-upgrade without any issues.

Comments

[John Orion]

you have something already open like synaptic when you tried apt-get update

[Hi-Angel]

Right. And btw, how is your title relevant to the content of the question?

[Admin]

This answers the title - not the whole question.