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PUB:20180819 How to define and use functions in Linux Shell Script.md

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@ -106,7 +106,7 @@ function func_return_value {
} }
``` ```
上面的函数向调用者返回 10。让我们执行这个函数： 上面的函数向调用者返回 `10`。让我们执行这个函数：
``` ```
$ func_return_value $ func_return_value
@ -119,7 +119,7 @@ $ echo "Value returned by function is: $?"
Value returned by function is: 10 Value returned by function is: 10
``` ```
**提示**：在 Bash 中使用 `$?` 去获取函数的返回值 **提示**：在 Bash 中使用 `$?` 去获取函数的返回值。
### 函数技巧 ### 函数技巧