Undergraduate CS student at USTC, hobbiest programmer and passionate geek. Primarily a developer, often a DevOps engineer and Linux SysAdmin.

Python, C and C++ are my primary options for course labs and new projects, though I always like trying something new (and that’s why I have a little taste of everything).

Also loves casual and puzzle gaming.

In action

I’m an active contributor on GitHub across various repositories. You can see a list of all my pull requests using GitHub search.

I’m also an avid user on Stack Overflow:

Profile for iBug at Stack Overflow, Q&A for professional and enthusiast programmers Profile for iBug at Stack Exchange

See my questions and answers on Stack Overflow, or view a selected list of my good posts.

Quick facts

On the techie side (more about my skills here):

Advanced knowledge

  • Programming: Python, C++, C, Bash (these are also my top tags on Stack Overflow), JavaScript and Ruby
  • Software: Git, Jekyll, OpenSSH

Intermediate knowledge

  • Programming: the Web Trilogy (HTML / CSS / JavaScript), Verilog, VBScript
  • Framework: Ruby on Rails, Bootstrap, jQuery, Flask, Chisel, Electron
  • Software: Vim, Nginx, Docker, Linux LVM, Make, LXD, Systemd, Singularity (Container)
  • Miscellaneous: Linux Networking (routing, tunneling, firewall, iptables etc.) plus various networking protocols (HTTP and DNS in particular)

Basic knowledge

  • Programming: SQL (MySQL 5.7+ / MariaDB 10.1+, SQLite 3), PHP, Go, AWK, Wolfram Mathematica, Perl
  • Framework: Sinatra, Django, React
  • Software: ZFS
  • Technology: something used to be here,


  • Linux distro: Ubuntu (desktop / workstation) and Debian (server)
  • Version control: Git (and good at it)
  • Text editor: Visual Studio Code plus <ESC>:wq (get my config)
  • Automation: Shell scripts, Make, Cron / At, Systemd Services, Docker, AWS Lambda

Working environment

My workstation in office (headless) is equipped with Ryzen 9 3900X, Ubuntu 20.04 LTS, Docker, LXD, KVM (libvirt), plus Python, Ruby, Node.js and Go, etc, and I do my work over SSH (and VS Code Remote - SSH) every day.

MSI produces high-performance gaming laptops with very comfortable and beautiful keyboards. Must buy!


  • Primary languages:
    • Chinese
      • Native to Simplified (written) and Mandarin (oral)
      • Reads Traditional without problem but limited in writing
    • English (Proficient as a foreign language, prefer American flavor)
  • Secondary languages: French (advancing), Spanish (limited vocabulary)
  • Minor language(s): Italian (can read with a dictionary)
    • Also can identify a wide range of Latin-script languages, though without understanding a single word.
  • My blog
  • My entertainment


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