sudo systemctl stop polkadot.service
cd polkadot-sdk
./target/release/polkadot purge-chain --chain=polkadot --database=RocksDb -y
sudo curl -o - -L https://polkadot.services-ernventures.com/polkadot/snap_polkadot.tar.lz4 | lz4 -c -d - | sudo tar -x -C /root/.local/share/polkadot/chains/ksmcc3/
sudo systemctl restart polkadot.service && sudo journalctl -u polkadot.service -f
