How to check an OS update is complete?
Check it using lsb_release -a
user@Laptop~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04 LTS
Release: 14.04
Codename: trusty
also check linux kernel version using uname -r
user@Laptop~$ uname -r
3.13.0-24-generic
You can always sudo apt-get update, apt-get upgrade and sudo apt-get -f install to meet dependencies and install/update apps