# hostname

## Syntax

```
[no] hostname <string>
```

## Syntax Description

<table><thead><tr><th width="203">Keyword</th><th>Description</th></tr></thead><tbody><tr><td><code>no</code></td><td>(Optional) Deletes the existing hostname.</td></tr><tr><td>string</td><td>An alphanumeric string of up to 63 characters, beginning with a letter.</td></tr></tbody></table>

## Defaults

The system host name is empty by default.

## Usage Guidelines

An Island may be given a unique and descriptive name to distinguish it from other Islands. The hostname will be used as the CLI prompt. It is also used to when auto-generating file names for some commands (e.g., [backup url](/island-router-cli-2.3.2/commands/backup/backup-url.md)).

## Examples

```
hostname dallas-island-02
```

## Related Commands


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.islandrouter.com/island-router-cli-2.3.2/commands/hostname.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.