如何做到在Bash中浮动比较呢？ [英] How to do float comparison in Bash?

问题描述

lock_percent=$(echo "scale = 5; $value2*100/$value1" | bc)
value=`echo "$lock_percent" | bc`

    if [[ "$value" > "$8" ]]; then
       echo "Lock Percentage:$value percentage State Critical"
       exit $STATE_CRITICAL
    fi

我不能够执行与这个浮动比较。我不能够理解我要去的地方错了。

I am not able to perform a float comparison with this. I am not able to understand where I am going wrong.

推荐答案

猛砸本身不能使用浮动。在这种情况下，也许你可以用10或100（等）乘，并获得整数值，您可以比较。或者，您可以使用 BC 的比较和返回值：

Bash itself can't use float. In this case maybe you can multiply by 10 or 100 (etc.) and get integer value which you can compare. Or, you can use bc comparison and return value:

echo "10.2>10.1" | bc

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