# Use `UpdateAlias` with a CLI
<a name="example_lambda_UpdateAlias_section"></a>

The following code examples show how to use `UpdateAlias`.

------
#### [ CLI ]

**AWS CLI**  
**To update a function alias**  
The following `update-alias` example updates the alias named `LIVE` to point to version 3 of the `my-function` Lambda function.  

```
aws lambda update-alias \
    --function-name my-function \
    --function-version 3 \
    --name LIVE
```
Output:  

```
{
    "FunctionVersion": "3",
    "Name": "LIVE",
    "AliasArn": "arn:aws:lambda:us-west-2:123456789012:function:my-function:LIVE",
    "RevisionId": "594f41fb-b85f-4c20-95c7-6ca5f2a92c93",
    "Description": "alias for live version of function"
}
```
For more information, see [Configuring AWS Lambda Function Aliases](https://docs.aws.amazon.com/lambda/latest/dg/aliases-intro.html) in the *AWS Lambda Developer Guide*.  
+  For API details, see [UpdateAlias](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/lambda/update-alias.html) in *AWS CLI Command Reference*. 

------
#### [ PowerShell ]

**Tools for PowerShell V4**  
**Example 1: This example updates the Configuration of an existing Lambda function Alias. It updates the RoutingConfiguration value to shift 60% (0.6) of traffic to version 1**  

```
Update-LMAlias -FunctionName "MylambdaFunction123" -Description " Alias for version 2" -FunctionVersion 2 -Name "newlabel1" -RoutingConfig_AdditionalVersionWeight @{Name="1";Value="0.6}
```
+  For API details, see [UpdateAlias](https://docs.aws.amazon.com/powershell/v4/reference) in *AWS Tools for PowerShell Cmdlet Reference (V4)*. 

**Tools for PowerShell V5**  
**Example 1: This example updates the Configuration of an existing Lambda function Alias. It updates the RoutingConfiguration value to shift 60% (0.6) of traffic to version 1**  

```
Update-LMAlias -FunctionName "MylambdaFunction123" -Description " Alias for version 2" -FunctionVersion 2 -Name "newlabel1" -RoutingConfig_AdditionalVersionWeight @{Name="1";Value="0.6}
```
+  For API details, see [UpdateAlias](https://docs.aws.amazon.com/powershell/v5/reference) in *AWS Tools for PowerShell Cmdlet Reference (V5)*. 

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For a complete list of AWS SDK developer guides and code examples, see [Using Lambda with an AWS SDK](sdk-general-information-section.md). This topic also includes information about getting started and details about previous SDK versions.