mylaptop@Inspiron-3443:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
  linux-headers-4.4.0-38 linux-headers-4.4.0-38-generic linux-image-4.4.0-38-generic linux-image-extra-4.4.0-38-generic
  linux-signed-image-4.4.0-38-generic
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
mylaptop@Inspiron-3443:~$