Merge pull request #9961 from wxy/20180819-How-to-define-and-use-functions-in-Linux-Shell-Script

PRF:20180819 How to define and use functions in Linux Shell Script
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pityonline 2018-08-27 12:05:09 +08:00 committed by GitHub
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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
@ -119,7 +119,7 @@ $ echo "Value returned by function is: $?"
Value returned by function is: 10
```
**提示**:在 Bash 中使用 `$?` 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