CODE EXAMPLE FOR SHELL

cannot find lock /var/lib/dpkg/lock-frontend

sudo rm /var/lib/dpkg/lock-frontend
sudo rm /var/lib/apt/lists/lock
sudo rm /var/cache/apt/archives/lock
sudo rm /var/lib/dpkg/lock

sudo dpkg --configure -a

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install typespeed

sudo apt install openssh-server
sudo apt install ssh