yes -- be repetitively affirmative
60+ times faster than macOS' built-in yes.
make
And copy yes to wherever you want.
yes [expletive]
The yes utility outputs expletive, or, by default, y, forever.
$ ./yes | pv > /dev/null
... [2.4GiB/s] ...
$ yes | pv > /dev/null
... [38.0MiB/s] ...
MIT