1. Dart
2. dart:io
3. FileSystemException
4. osError property

##### FileSystemException class

1. Constructors
2. FileSystemException
3. Properties
4. message
5. osError
6. path
7. hashCode
8. runtimeType
9. Methods
10. toString
11. noSuchMethod
12. Operators
13. operator ==

# osError property

OSError osError
final

The underlying OS error. Can be `null` if the exception is not raised due to an OS error.

## Implementation

    final OSError osError