1. sudo apt-get install qttools5-dev-tools
* https://forum.qt.io/topic/30268/solved-how-to-lupdate-with-qt5
2. lupdate -verbose *.pro -ts *.ts
https://doc.qt.io/qt-5/qtlinguist-hellotr-example.html
3. linguist *.ts
참고
cat /etc/issue - 우분투 버전 확인 (Ubuntu 20.04.1 LTS \n \l)