dr@love:~ $ sudo apt-get -s 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:
  icu-devtools libc-ares2 libicu-dev libperl-dev libsasl2-dev libtcl8.5 tcl8.5 tcl8.5-dev
Use 'sudo apt autoremove' to remove them.
The following packages have been kept back:
  mariadb-client-10.1 mariadb-server-10.1 mariadb-server-core-10.1
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.