shell 算数运算
2017-07-26 18:48
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a="1"
b="2"
declare -i c=a+b
declare -i c=1+2
declare -i c=b-a
declare -i c=2-1
declare -i c=a*b
declare -i c=1*2
c=`awk 'BEGIN{printf"%0.2f\n",('$a'/'$b')}'`
c=`awk 'BEGIN{printf"%0.2f\n",('1'/'2')}'`
以上就是加减乘除的几个例子
完!!
b="2"
declare -i c=a+b
declare -i c=1+2
declare -i c=b-a
declare -i c=2-1
declare -i c=a*b
declare -i c=1*2
c=`awk 'BEGIN{printf"%0.2f\n",('$a'/'$b')}'`
c=`awk 'BEGIN{printf"%0.2f\n",('1'/'2')}'`
以上就是加减乘除的几个例子
完!!