Welcome to Luke Du's ugly page.

Greenplum SQL Documentation

May 24, 2026.

2026 trip map (draft)

April 1, 2026.

Tesla trip Just sold 2025 Tesla Cybertruck. Create map for one year use.

December 4, 2025.

Python trip map generation with the output like 2025 trip map.
Animation map.

August 27, 2025.

Web Card Game: SET

August 17, 2025.

Python Card Game: SET

August 17, 2025.

24-Point Calculator

August 16, 2025.

Python piano simulation

June 16 2023.

Debian Linux installation.

August 29 2021.

MX Linux installation.

March 29 2021.

XOR encrypt/decrypt : using XOR to encrypt text file into two: one random key, one encrypted file. Then we can decrypt using these two files.
March 27 2021.

Collatz Sample : Rust problem solving.

WDInfo : The first Rust project. Code is available at rustbook on my github.

Postgresql : Python doc automation sample. Code is available at test4pycharm on my github.

February 27, 2021.

Mongodb learn plan using giving data.

Notes.

2021 January 15, docker command.

2021 January 12, Rust note (start project). Command cargo.

2021 January 9, Unix Pem.

2021 January 9, Unix sudo nopasswd.

2021 February 22, Experiment of greenplum in docker.

2021年2月24日：把需要在docker container执行的命令编入rust程序里。 (February 24, 2021: how to use ssh to submit docker command through rust programming)
Learn mongo in docker.

February 26, 2021.

Import JSON data into mongodb in docker using python code.