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Merged
Snailclimb merged 1 commit into from
Mar 19, 2019
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Update Shell.md #220

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2 changes: 1 addition & 1 deletion 操作系统/Shell.md
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Expand Up @@ -210,7 +210,7 @@ expr length "$name";
expr 5+6 // 直接输出 5+6
expr 5 + 6 // 输出 11
```
对于某些运算符，还需要我们使用符号"\"进行转义，否则就会提示语法错误。
对于某些运算符，还需要我们使用符号`\`进行转义，否则就会提示语法错误。

```shell
expr 5 * 6 // 输出错误
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