sl

sl - Steam Locomotive

When you mistype ls, a steam locomotive runs across your terminal.

Four versions: 1985, 2010, 2023, 2026. The latest 2026 version detects existing text on the screen and sweeps only when the train reaches it.

See sl(1) for full documentation.

INSTALL

brew tap tecolicom/tap
brew install sl-classic

Toyoda Masashi’s version is in Homebrew core: brew install sl

REPOSITORY

• https://github.com/tecolicom/sl
• https://tecolicom.github.io/sl/

JUNET 40th Anniversary Symposium

• 2024-11-25, The University of Tokyo
• https://internetweek.jp/2024/archives/program/j2
• https://sites.google.com/keio.jp/junet40 ¹
• Slides (PDF) / HTML

REFERENCES

• Kazumasa Utashiro, “JUNET and Hacker Culture”, IPSJ Magazine, Vol.66, No.8, 2025. Special issue: “How the Internet Began in Japan – 40 Years of JUNET”

LINKS

• SL (Wikipedia)
• Sl (UNIX) (Wikipedia, Japanese)
• sl by Toyoda Masashi
• https://github.com/ghaerr/elks/blob/master/elkscmd/tui/sl.c
• https://x.com/toyodam/status/1718167634196472065/
• https://x.com/n_soda/status/1207639714347438081
• https://atmarkit.itmedia.co.jp/news/200909/07/lltv01.html
• https://utashiro.hatenablog.com/entry/20070407/1175911268
• https://utashiro.hatenablog.com/entry/20101103/1288758988
• https://utashiro.hatenablog.com/entry/20110522/1306035761
• https://gist.github.com/kaz-utashiro/f36da47151a4a583961bed7847122c96
• https://creazy.net/2008/02/sl_js.html
• https://creazy.net/2008/02/sl_js_toyodamasashi_in_twitter.html
• https://www.tkl.iis.u-tokyo.ac.jp/~toyoda/sl/links.html

1. 内容は「UNIXとJUNET」と書いてあるけど、そんなことは事前に一言も聞いてなかったので sl について話した。こんなページがあったことも知らなかった。だいたい、こんな漠然としたテーマで話せるわけないので、知らなくてよかったw ↩