shell中的let命令_shell let-CSDN博客

网站介绍:在shell中,let命令用于指定算术运算,即 let expretion。实例如下:#!/usr/bin/env basha=2echo "a init is $a"let "a+=1"echo "a+=1 is $a"let "a-=1"echo "a-=1 is $a"let "a*=2"echo "a*=2 is $a"l_shell let