I've done
sudo apt install conky-all
cp /etc/conky/conky.conf ~/.conkyrc
sudo apt-add-repository -y ppa:teejee2008/ppa
sudo apt update
and then;
sudo apt install conky-manager
I get;
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package conky-manager
How can I overcome this problem?Why I am unable to locate the package?