Linux 比较变量，而不考虑bash中的标识

我想比较

bash

中的两个变量，看看变量是否超过了截止值

比如说

截止值=500.00

cut_off=500.00

现在，我想检查一个变量，不管它的标志是否超过

截止值

值

source_1=-510.00
target_1=1620.00

source_2=490.00
target_2=-488.13

source_3=5490.00
target_3=-4488.13

现在，当要检查的变量大于

cut\u off

时，则

echo

表示

变量值随要检查的cut\u off变量的差异而变化`

我已经像下面这样做了，但它没有打印正确的错误声明

cutoff=500.0

actual_diff=$(echo "${source}" - "${target}" | bc)

if (( $(echo "$actual_diff > $cutoff" |bc -l) ));
then
    echo -e "Difference between source and target is more than cut_off Actual difference is ${actual_diff}"
    exit 1
else
    echo -e "Difference between source and target is in cut_off range Actual difference is ${actual_diff}"
fi

好的，这是我的建议

cutoff=500.0

actual_diff=$(echo "${source}" - "${target}" | bc)

if (( $(echo "${actual_diff#-} > ${cutoff#-}" |bc -l) ));

then
    echo -e "Difference between source and target is more than cut_off Actual difference is ${actual_diff}"
    exit 1
else
    echo -e "Difference between source and target is in cut_off range Actual difference is ${actual_diff}"
fi

（感谢以下帖子）
什么是截止范围？0到截止？@kalou.net它介于
-500.00到500.00之间
因此，如果我理解正确，您希望将实际_diff的“绝对值”与截止的“绝对值”进行比较。@kalou.net是的，正确