#!/bin/bash
num1=2
num2=3
#result=$(expr $num1 + $num2)
#result=`expr $num1 + $num2`
#advise
result=$[$num1+$num2]
echo "${num1} + ${num2} = ${result}"
#!/bin/bash
num1=2
num2=3
#result=$(expr $num1 + $num2)
#result=`expr $num1 + $num2`
#advise
result=$[$num1+$num2]
echo "${num1} + ${num2} = ${result}"
本文标题：shell中的算术运算
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