The first echo statement uses the single > to force the creation of a new file.

第一个 echo 语句使用单个的 > 强行创建新文件。

youdao

Bats are the only mammal capable of flying and are so highly evolved to be capable of pinpointing a single insect flying in the pitch black and plucking it out of the air using echo location.

蝙蝠是唯一会飞的哺乳动物，进化程度很高，能够在一片漆黑中精确定位一只飞虫的位置，并利用回波定位准确地从空中捕捉。

youdao

If you're appending only a single line instead of multiple lines or an entire file, you can use echo instead of cat.

如果您仅追加单行而不是多行或整个文件，您可以使用echo而不是cat。

youdao

There is an echo of Greek tragedy about the succession of blows striking a single American family.

CNN: Brought up to be a good man