[Unit]
Description=High speed download utility
After=network.target
 
[Service]
User=pi
Environment=DIR=/home/pi/Downloads
ExecStartPre=/bin/mkdir -p ${DIR}
ExecStart=/usr/bin/aria2c --enable-rpc \
                          --rpc-listen-all=true \
                          --rpc-allow-origin-all \
                          --dir ${DIR}
Restart=on-failure
 
[Install]
WantedBy=multi-user.target