1# sync 2 3 4## Command Function 5 6This command is used to synchronize cached data (data in the file system) to an SD card. 7 8 9## Syntax 10 11sync 12 13 14## Parameters 15 16None. 17 18 19## Usage Guidelines 20 21- The **sync** command is used to refresh the cache. If no SD card is inserted, no operation will be performed. 22 23- When an SD card is inserted, the cache information is synchronized to the SD card. If the synchronization is successful, no information is displayed. 24 25 26## Example 27 28Run **sync**. Data will be synchronized to the SD card if an SD card is available, and no operation will be performed if no SD card is available. 29 30 31## Output 32 33None. 34