# Shell Command Reference<a name="EN-US_TOPIC_0000001051611536"></a>

This chapter describes the functions, syntax, parameter ranges, usages, and examples of key system commands.

For details about the commands that are not described in this document, see the output of the  [help](help.md)  command. You can also use the  **-h | --help**  option of a command to view the help information about the command.

-   **[System Commands](system-commands.md)**  

-   **[File Commands](file-commands.md)**  

-   **[Network Commands](network-commands.md)**  


