如何在 bash shell 脚本中添加整数和浮点数
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How to add an integer number and a float number in a bash shell script
提问by sasuke
I have two numbers:
我有两个数字：
value1=686
value2=228.35
I am not able to add an integer and a float. Please help me out to get the result.
我无法添加整数和浮点数。请帮我得到结果。
I am running it in bash.
我在 bash 中运行它。
回答by Karoly Horvath
echo 1 + 3.5 | bc
awk "BEGIN {print 1+3.5; exit}"
python -c "print 1+3.5"
perl -e "print 1+3.5"
Just replace the numbers with your variables, eg: echo $n1 + $n2 | bc
只需用您的变量替换数字，例如： echo $n1 + $n2 | bc
回答by Konstantin Yovkov
If you have the bclanguage installed, you can do the following:
如果bc安装了该语言，则可以执行以下操作：
#!bin/bash
numone=1.234
numtwo=0.124
total=`echo $numone + $numtwo | bc`
echo $total
If you don't have bc, then you can try with awk. Just in one single line:
如果您没有bc，那么您可以尝试使用 awk。仅在一行中：
echo 1.234 2.345 | awk '{print + }'
There are plenty of other options, also. Like python, perl, php....
还有很多其他选择。像python、perl、php....
回答by tapas dey
Bash doesn't have floating-point types, but you can use a calculator such as bc:
Bash 没有浮点类型，但您可以使用计算器，例如bc：
a=686
b=228.35
c=`echo $a + $b | bc`
echo "$c"
回答by snehal
#!/bin/Bash
echo "Enter the two numbers to be added:"
read n1
read n2
answer=$(($n1+$n2))
echo $answer
