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

ps aux | grep -i apt
sudo kill <process_id>
# Check if the process was killed by running the ‘ps aux | grep -i apt’ command. If it is still running, force kill it with SIGKILL signal:
sudo kill -9 <process_id>
# Another, easier way would be to use the killall command. This will kill all the instances of a running program:
sudo killall apt apt-get

sudo lsof /var/lib/dpkg/lock
or
sudo lsof /var/lib/apt/lists/lock
or
sudo lsof /var/lib/dpkg/lock-frontend

It iwating for cache lock: Could not get lock /var/lib/dpkg/lock.frontend.

Ubuntu: Waiting for cache lock: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 15551 (apt)