Update after initial Mint 19.1 install resulting in gconf2 errors

Update repo info

sudo apt update

Upgrade packages

sudo apt upgrade

then get gconf2 errors

So Configure dpkg....

sudo dpkg --configure -a
sudo apt upgrade
sudo apt-get install -f

Enable SSH if needed

sudo apt-get install openssh-server
sudo systemctl is-enabled ssh
sudo systemctl is-active ssh

or in one line

sudo apt-get install openssh-server && sudo systemctl is-enabled ssh && sudo systemctl is-active ssh

Clean up repos

sudo apt upgrade

sudo apt-get clean