Linux shell之全局變量和局部變量

vi function11.sh
#!/bin/bash

text="global variable"

#函數中使用的局部變量和全局變量的名字相同
use_local_var_fun()
{
local text="local variable"
echo "In function use_local_var_fun"
echo $text
}

#輸出函數use_local_var_fun內部的局部變量
echo "Execute the function use_local_var_fun"
use_local_var_fun

#輸出函數use_local_var_fun外的全局變量值
echo "Out of function use_local_var_fun"
echo $text
exit 0

 

./function11.sh
Execute the function use_local_var_fun
In function use_local_var_fun
local variable
Out of function use_local_var_fun
global variable