For xUbuntu 15.04 run the following:
Keep in mind that the owner of the key may distribute updates, packages and repositories that your system will trust (more information).
echo 'deb http://download.opensuse.org/repositories/server:/eGroupWare/xUbuntu_15.04/ /' | sudo tee /etc/apt/sources.list.d/server:eGroupWare.list
curl -fsSL https://download.opensuse.org/repositories/server:eGroupWare/xUbuntu_15.04/Release.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/server_eGroupWare.gpg > /dev/null
sudo apt update
sudo apt install jpgraph
For xUbuntu 14.10 run the following:
Keep in mind that the owner of the key may distribute updates, packages and repositories that your system will trust (more information).
echo 'deb http://download.opensuse.org/repositories/server:/eGroupWare/xUbuntu_14.10/ /' | sudo tee /etc/apt/sources.list.d/server:eGroupWare.list
curl -fsSL https://download.opensuse.org/repositories/server:eGroupWare/xUbuntu_14.10/Release.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/server_eGroupWare.gpg > /dev/null
sudo apt update
sudo apt install jpgraph
For xUbuntu 12.04 run the following:
Keep in mind that the owner of the key may distribute updates, packages and repositories that your system will trust (more information).
echo 'deb http://download.opensuse.org/repositories/server:/eGroupWare/xUbuntu_12.04/ /' | sudo tee /etc/apt/sources.list.d/server:eGroupWare.list
curl -fsSL https://download.opensuse.org/repositories/server:eGroupWare/xUbuntu_12.04/Release.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/server_eGroupWare.gpg > /dev/null
sudo apt update
sudo apt install jpgraph