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修复 介绍 特殊变量 $? 时书写错误的问题 #11

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ruanyf merged 1 commit into from
Apr 17, 2020
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修复 介绍 特殊变量 $? 时书写错误的问题 #11

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2 changes: 1 addition & 1 deletion docs/variable.md
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Expand Up @@ -235,7 +235,7 @@ $ echo $?
1
```

上面例子中，`ls`命令查看一个不存在的文件，导致报错。`$1`为1，表示上一个命令执行失败。
上面例子中，`ls`命令查看一个不存在的文件，导致报错。`$?`为1，表示上一个命令执行失败。

（2）`$$`

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