> For the complete documentation index, see [llms.txt](https://docs.islandrouter.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.islandrouter.com/island-router-cli-2.3.2/commands/hostname.md).

# 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


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