---
title: let
layout: command
version: 0.59.0
---

Create a variable and give it a value.

## Signature

```> let (var_name) (initial_value)```

## Parameters

 -  `var_name`: variable name
 -  `initial_value`: equals sign followed by value

## Examples

Set a variable to a value
```shell
> let x = 10
```

Set a variable to the result of an expression
```shell
> let x = 10 + 100
```

Set a variable based on the condition
```shell
> let x = if $false { -1 } else { 1 }
```