Interestingly I tried this as well and was disappointed with the results: yes $(...

1718627440 · 2025-10-24T00:16:44 1761265004

> I guess Unix pipes are slow.

Or string concatenation, or pipeviewer.

fukka42 · 2025-10-24T00:30:31 1761265831

yes doesn't do string concatenation, at least not in the loop that matters. It just prepares a buffer of bytes once and writes it to stdout repeatedly.

https://github.com/coreutils/coreutils/blob/master/src/yes.c

eru · 2025-10-24T02:23:46 1761272626

Compare https://codegolf.stackexchange.com/questions/199528/fastest-...