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But a single echo invocation may do more than one write(2) call and you have no control over that. With strace -fe write zsh -c "echo '${(l:10000:)}'" > /dev/null on Debian, I see two writes, one of 8192 bytes, one of 1809. Same with bash, probably down to stdio.

Stéphane Chazelas
– Stéphane Chazelas

2020-05-27 07:05:18 +00:00
Commented May 27, 2020 at 7:05
@StéphaneChazelas Interesting. Nonetheless: When I was searching for that lower limit I assumed it might be as low as 512 bytes. And even that would probably be more than enough for this task.

Hauke Laging
– Hauke Laging

2020-05-27 08:10:33 +00:00
Commented May 27, 2020 at 8:10

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