---
title: help externs
categories: |
  core
version: 0.104.0
core: |
  Show help on nushell externs.
usage: |
  Show help on nushell externs.
editLink: false
contributors: false
---
<!-- This file is automatically generated. Please edit the command in https://github.com/nushell/nushell instead. -->

# `help externs` for [core](/commands/categories/core.md)

<div class='command-title'>Show help on nushell externs.</div>

## Signature

```> help externs {flags} ...rest```

## Flags

 -  `--find, -f {string}`: string to find in extern names and descriptions

## Parameters

 -  `...rest`: The name of extern to get help on.


## Input/output types:

| input   | output |
| ------- | ------ |
| nothing | table  |
## Examples

show all externs
```nu
> help externs

```

show help for single extern
```nu
> help externs smth

```

search for string in extern names and descriptions
```nu
> help externs --find smth

```