TDengine CLI will display a welcome message and version information if it successfully connected to the TDengine service. If it fails, TDengine CLI will print an error message. See [FAQ](/train-faq/faq) to solve the problem of terminal connection failure to the server. The TDengine CLI prompts as follows:
TDengine CLI will display a welcome message and version information if it successfully connected to the TDengine service. If it fails, TDengine CLI will print an error message. See [FAQ](/train-faq/faq) to solve the problem of terminal connection failure to the server. The TDengine CLI prompts as follows:
```cmd
```
Welcome to the TDengine shell from Linux, Client Version:2.6.0.4
Welcome to the TDengine shell from Linux, Client Version:2.6.0.4
Copyright (c) 2022 by TAOS Data, Inc. All rights reserved.
Copyright (c) 2022 by TAOS Data, Inc. All rights reserved.
