Ubunti20.04 LTS
java -version
sudo apt install openjdk-8-jre-headless
sudo curl --create-dirs -o ~/.embulk/bin/embulk -L "https://dl.embulk.org/embulk-latest.jar"
sudo chmod +x ~/.embulk/bin/embulk
sudo ~/.embulk/bin/embulk --version
embulk gem install embulk-output-mysql
embulk gem install embulk-output-postgresql
embulk gem install embulk-output-sqlserver