How to loop through a range of decimal numbers in bash?
NickName:izxle Ask DateTime:2015-06-11T06:49:18

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

I'd like to generate a sequence of equally spaced decimal numbers.

For example, I want to echo all numbers between 3.0 and 4.5, with step 0.1. I tried $ for i {3.0..4.5..0.1}; do echo $i; done, but this gives an error.

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

Copyright Notice：Content Author:「izxle」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/30768644/how-to-loop-through-a-range-of-decimal-numbers-in-bash

Answers
Ole Tange 2015-06-22T09:48:06

\n I also tried $ for i in $(seq 3.0 4.5 0.1); do echo $i; done but nothing happens.\n\n\nThe order is wrong:\n\n$ for i in $(seq 3.0 0.1 4.5); do echo $i; done\n",

drpetermolnar 2015-06-10T23:00:47

If you're looking for a loop from 3.5 to 4.5 in 0.1 steps this would work\n\nfor x in {35..45}; do\n y=`bc <<< \"scale=1; $x/10\"`\n echo $y\ndone\n\n\nThe same with 0.01 steps\n\nfor x in {350..450}; do\n y=`bc <<< \"scale=2; $x/100\"`\n echo $y\ndone\n",

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