一、shell中的变量声明
#!/bin/bash
num=2
#declare num=2
#let num=2
echo "num = ${num}"
二、shell中命令运行结果赋值给某个变量
#!/bin/bash
#path=$(pwd)
path=`pwd`
echo current path: $path
#!/bin/bash
num=2
#declare num=2
#let num=2
echo "num = ${num}"
#!/bin/bash
#path=$(pwd)
path=`pwd`
echo current path: $path