1# File Management 2 3### Introduction 4 5This sample shows file management functions, such as creating a file, changing a file name, writing a file, reading a file, and deleting a file. 6 7### Usage 8 91. Touch **Create fileIo** to create a file. After the file is created successfully, the absolute path of the file is displayed. 10 112. Touch **Rename fileIo** to change the file name. After the operation is successful, the absolute path of the new file is displayed. 12 133. Touch **Write fileIo** to write data to the file. After the data is written, the content written is displayed. 14 154. Touch **Read fileIo** to read file information. After the operation is successful, the content read is displayed. 16 175. Touch **Delete fileIo** to delete the file. A message is displayed, indicating that the file is deleted successfully. 18 19### Constraints 20 21This sample can only be run on standard-system devices. 22