是什么。/ example.sh`和'SH example.sh`之间`的区别 [英] What is the difference between `./example.sh` and `sh example.sh`

问题描述

我试图使用bash和阵列玩。但在执行一个示例脚本，我得到了一个意外的语法错误消息： example.sh：3：example.sh：语法错误：（意外这是脚本。

 ＃！/斌/庆典
阵列=（一二三）
 

如果我运行./example.sh它的工作原理，并显示没有错误的脚本。但是，如果我跑 SH example.sh 我收到错误消息。

我觉得这两个命令是一样的：

• SH example.sh


• ./ example.sh

所以...两者有什么区别呢？

解决方案

  ARRAY_NAME =（值1 ...值N）
 

这是如何只在初始化庆典的数组。当您执行 ./ example.sh ，shebang行＃！/斌/庆典告诉系统使用庆典执行

但是，当你执行 SH example.sh ， SH 用于执行。在许多Unix系统（如Linux）， SH 等同于庆典。这似乎 SH 为您的系统上不同的外壳。

I am trying to play with bash and arrays. But executing a sample script, I got an unexpected syntax error message: example.sh: 3: example.sh: Syntax error: "(" unexpected. And this is the script

#!/bin/bash
array=( one two three )

If I run the script with ./example.sh it works and no errors are displayed. But if I run sh example.sh I get the error message.

I thought that these two commands are the same:

• sh example.sh
• ./example.sh

so ... what is the difference between the two?

解决方案

array_name=(value1 ... valuen)

This is how to initializes an array in bash only. When you execute ./example.sh, the shebang line #!/bin/bash tells the system to use bash to execute.

However, when you execute sh example.sh, sh is used to execute. In many Unix systems (like Linux), sh is equivalent to bash. It seems sh is a different shell on your system.

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