标签:style blog color sp div log bs as class
#!/bin/bash num1=1 num2=2 num3=3 #echo $($num1+$num2+$num3)#错误写法 echo $[$num1+$num2+$num3] echo $(($num1+$num2+$num3)) echo $(expr $num1 + $num2 + $num3 )
标签:style blog color sp div log bs as class
原文地址:http://www.cnblogs.com/ghgyj/p/4023500.html