# tftp
## Command Function
Trivial File Transfer Protocol \(TFTP\) is a protocol in the TCP/IP protocol suite for transferring files between clients and servers. TFTP provides simple and low-overhead file transfer services. The port number is 69.
The **tftp** command is used to transfer files with a TFTP server.
## Syntax
./bin/tftp _<-g/-p\>_ _-l_ _\[FullPathLocalFile\] -r \[RemoteFile\] \[Host\]_
## Parameters
**Table 1** Parameter description
Parameter
Description
Value Range
-g/-p
Specifies the file transfer direction.
-g: downloads files from the TFTP server.
-p: uploads files to the TFTP server.
N/A
-l FullPathLocalFile
Specifies the complete path of a local file.
N/A
-r RemoteFile
Specifies the file name on the server.
N/A
Host
Specifies the server IP address.
N/A
## Usage
1. Deploy a TFTP server on the server and configure the TFTP server correctly.
2. Use the **tftp** command to upload and download files on the OpenHarmony board.
3. The size of the file to be transferred cannot exceed 32 MB.
> **NOTICE:**
>TFTP is used for debugging and disabled by default. Do not use it in formal products.
## Example
Download the **out** file from the server.
## Output
```
OHOS # ./bin/tftp -g -l /nfs/out -r out 192.168.1.2
TFTP transfer finish
```
After the **tftp** command is executed, **TFTP transfer finish** is displayed if the file transfer is complete. If the file transfer fails, other information is displayed to help locate the fault.