How is GNU's yes so fast? $ yes | pv > /dev/null ... [10.2GiB/s] ... Compared to other Unices, GNU is outrageously fast. NetBSD's is 139MiB/s, FreeBSD, OpenBSD, DragonFlyBSD have very similar code as NetBSD and are probably identical, illumos's is 141MiB/s without an argument, 100MiB/s with. OS X just uses an old NetBSD version similar to OpenBSD's, MINIX uses NetBSD's, BusyBox's is 107MiB/s, Ultr
![Reddit - Dive into anything](https://cdn-ak-scissors.b.st-hatena.com/image/square/0e54972401cf05ec7c3347a91bfaa2a32448feb0/height=288;version=1;width=512/https%3A%2F%2Fexternal-preview.redd.it%2FhvIact6OFrFHcDFd8I7ttGXwf4dPjlyXnsRF2E3e_00.jpg%3Fauto%3Dwebp%26s%3Dea6f7cd9374c4a5ab42a63c58b475200b6f7ecea)