不那么无用的“是”bash 命令：如何在每个循环中确认命令

The not-so-useless "yes" bash command: how to confirm a command in every loop

提问by Tonio

I wrote a loop to unzip all zip files in a directory.

我编写了一个循环来解压缩目录中的所有 zip 文件。

for f in *zip
do
    unzip $f
done

However, I have to confirm the overwrite at every step:

但是，我必须在每一步都确认覆盖：

replace file123.txt? [y]es, [n]o, [A]ll, [N]one, [r]ename: A

How can I rewrite a loop to send at every cycle the same command?

如何重写循环以在每个周期发送相同的命令？

回答by Federico Giorgi

Wonderful, maybe one of the few cases where yesis still useful

精彩的极少数情况下，也许一个是仍然是有用的

Try with:

尝试：

for f in *zip
do
    yes | unzip $f
done

Which will work printing "y" at every command.

这将在每个命令中打印“y”。

Or alternatively, you can specify the string provided by yes, like:

或者，您可以指定 yes 提供的字符串，例如：

for f in *zip
do
    yes A | unzip $f
done

回答by Jonathan Feinberg

unzip -o $f

per the docs

根据文档

回答by Alberto Zaccagni

Try using

尝试使用

unzip -o

in your loop

在你的循环中

回答by user1977760

for f in *zip
do
   echo "yes" | unzip $f
done