如何循环遍历 bash 中的小数范围？

Question

我想生成一系列等间距的十进制数。

例如，我想 echo 3.0 和 4.5 之间的所有数字，步骤 0.1。我试过 $ for i {3.0..4.5..0.1}; do echo $i; done，但这会出错。

我也试过 $ for i in $(seq 3.0 4.5 0.1); do echo $i; done 但没有任何反应。

Answer 1

 for i in {3.0,4.5,0.1}; do echo $i; done

Answer 2

如果您正在寻找以 0.1 步从 3.5 到 4.5 的循环，这会起作用

for x in {35..45}; do
     y=`bc <<< "scale=1; $x/10"`
     echo $y
done

同0.01步

for x in {350..450}; do
         y=`bc <<< "scale=2; $x/100"`
         echo $y
done

Answer 3

I also tried $ for i in $(seq 3.0 4.5 0.1); do echo $i; done but nothing happens.

顺序错误：

$ for i in $(seq 3.0 0.1 4.5); do echo $i; done

How to loop through a range of decimal numbers in bash?