How to Obtain Command Help

When you enter commands or configure services, command help offers real-time help in addition to the configuration guide.

The CLI on the NetEngine 8000 F provides the following online help.

Full Help

You can obtain full help using any of the following methods:

Enter a question mark (?) in any command view to obtain all the commands and their simple descriptions.
```
<HUAWEI> ?
```
Enter a command followed by a space and a question mark (?). If the position of the question mark (?) is for a keyword, all the keywords and their brief description are listed. Use the following command output as an example:
```
<HUAWEI> terminal ?
  debugging  Enable/disable debug information to terminal  
  logging    Enable/disable log information to terminal
```
The words "debugging" and "logging" are keywords, following with their descriptions.
Enter a command followed by a space and a question mark (?). If the position of the question mark (?) is for a parameter, the value range and function of the parameter are listed. Use the following command output as an example:
```
[*HUAWEI] ftp timeout ?
  INTEGER<1-35791>  The value of FTP timeout, the default value is 10 minutes
[*HUAWEI] ftp timeout 35 ?
<cr>                    
```
In the command output, "INTEGER<1-35791>" indicates the value range, and "The value of FTP timeout, the default value is 10 minutes" is the brief description of the parameter function. "<cr>" indicates that no parameter is in the position. In this case, press Enter to run the command.

Partial Help

You can obtain partial help using any of the following methods:

Enter a string followed by a question mark (?). The system lists all the keywords that start with the string.

<HUAWEI> d?
  debugging                               delete
  dir                                     display

Enter a command followed by a question mark (?) if there are several matches for the keyword. The system lists all the keywords that start with the string.

<HUAWEI> display c?
  car                                     clock
  configuration                           control-flap
  cpu-defend                              cpu-monitor
  cpu-usage                               current-configuration

Enter the initial letters of a keyword in a command line and press Tab. The system lists the complete keyword. If there are several matches for the keyword, you can press Tab repeatedly. The system lists various keywords for you to choose the one you need.