login as: ubuntu
ubuntu@192.168.0.160's password:
Welcome to Ubuntu 16.04.1 LTS (GNU/Linux 4.4.0-31-generic i686)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage



The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.

ubuntu@ubuntu:~$ ls
Desktop    Downloads  opendps   Public     Videos
Documents  Music      Pictures  Templates
ubuntu@ubuntu:~$ sudo apt-get update
Ign:1 cdrom://Ubuntu 16.04.1 LTS _Xenial Xerus_ - Release i386 (20160719) xenial InRelease
Hit:2 cdrom://Ubuntu 16.04.1 LTS _Xenial Xerus_ - Release i386 (20160719) xenial Release
Hit:3 http://security.ubuntu.com/ubuntu xenial-security InRelease
Hit:4 http://ppa.launchpad.net/team-gcc-arm-embedded/ppa/ubuntu xenial InRelease
Hit:5 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:7 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [109 kB]
Fetched 109 kB in 1s (67.5 kB/s)

** (appstreamcli:13391): CRITICAL **: Error while moving old database out of the way.
AppStream cache update failed.
Reading package lists... Done
ubuntu@ubuntu:~$