There are more AWS SDK examples available in the [AWS Doc SDK Examples](https://github.com/awsdocs/aws-doc-sdk-examples) GitHub repo.

# Use `RegisterDefaultPatchBaseline` with a CLI
<a name="ssm_example_ssm_RegisterDefaultPatchBaseline_section"></a>

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

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

**AWS CLI**  
**To set the default patch baseline**  
The following `register-default-patch-baseline` example registers the specified custom patch baseline as the default patch baseline for the operating system type that it supports.  

```
aws ssm register-default-patch-baseline \
    --baseline-id "pb-abc123cf9bEXAMPLE"
```
Output:  

```
{
    "BaselineId":"pb-abc123cf9bEXAMPLE"
}
```
The following `register-default-patch-baseline` example registers the default patch baseline provided by AWS for CentOS as the default patch baseline.  

```
aws ssm register-default-patch-baseline \
    --baseline-id "arn:aws:ssm:us-east-2:733109147000:patchbaseline/pb-0574b43a65ea646ed"
```
Output:  

```
{
    "BaselineId":"pb-abc123cf9bEXAMPLE"
}
```
For more information, see [About Predefined and Custom Patch Baselines](https://docs.aws.amazon.com/systems-manager/latest/userguide/sysman-patch-baselines.html) in the *AWS Systems Manager User Guide*.  
+  For API details, see [RegisterDefaultPatchBaseline](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ssm/register-default-patch-baseline.html) in *AWS CLI Command Reference*. 

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

**Tools for PowerShell V4**  
**Example 1: This example registers a patch baseline as the default patch baseline.**  

```
Register-SSMDefaultPatchBaseline -BaselineId "pb-03da896ca3b68b639"
```
**Output:**  

```
pb-03da896ca3b68b639
```
+  For API details, see [RegisterDefaultPatchBaseline](https://docs.aws.amazon.com/powershell/v4/reference) in *AWS Tools for PowerShell Cmdlet Reference (V4)*. 

**Tools for PowerShell V5**  
**Example 1: This example registers a patch baseline as the default patch baseline.**  

```
Register-SSMDefaultPatchBaseline -BaselineId "pb-03da896ca3b68b639"
```
**Output:**  

```
pb-03da896ca3b68b639
```
+  For API details, see [RegisterDefaultPatchBaseline](https://docs.aws.amazon.com/powershell/v5/reference) in *AWS Tools for PowerShell Cmdlet Reference (V5)*. 

------