linux - bash - 编写函数语法的两种方式

Question

在 bash 中我们可以写函数，但实际上我们有两种方式(两种语法)，

请指教

example1 和 example2 有什么区别

或者也许没有任何区别？

 function I_love_function

 {

  .
  .

 }

---

I_love_function ()

{

  .
  .
}

如何调用函数I_love_function

Answer 1

发件人:http://www.gnu.org/software/bash/manual/bashref.html#Shell-Functions

Functions are declared using this syntax:

name () compound-command [ redirections ] 
or 
function name [()] compound-command [ redirections ]

This defines a shell function named name. The reserved word function is optional. If the function reserved word is supplied, the parentheses are optional.