Linux, piping together apt-get update and apt-get upgrade

Question

I am trying my hand at deploying a small django app I have created on a remote server using fabric. As this is fresh server and after googling, I observed that I had to run apt-get update && apt-get upgrade commands to update the system packages.

The command I provided using fabric api is

run('apt-get update && apt-get upgrade')

I get

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?

How do I execute this commands so that I do not face this error

Answer 1

In this case you just have to remove the lock:

sudo rm /var/lib/dpkg/lock

and then try to execute the command

Let me know if its helps if not then follow the following:

sudo su sudo rm /var/lib/dpkg/lock apt-get update

and then execute the command update and upgrade command on single line and if its works then go for api

Answer 2

It means another process is already running an apt-get command. Close your other terminal windows, and perhaps any GUI's you have open that use apt-get.