There are more AWS SDK examples available in the [AWS Doc SDK Examples](https://github.com/awsdocs/aws-doc-sdk-examples) GitHub repo.
# Use `DescribeParameters` with an AWS SDK or CLI
The following code examples show how to use `DescribeParameters`.
------
#### [ CLI ]
**AWS CLI**
**Example 1: To list all parameters**
The following `describe-parameters` example lists all parameters in the current AWS account and Region.
```
aws ssm describe-parameters
```
Output:
```
{
"Parameters": [
{
"Name": "MySecureStringParameter",
"Type": "SecureString",
"KeyId": "alias/aws/ssm",
"LastModifiedDate": 1582155479.205,
"LastModifiedUser": "arn:aws:sts::111222333444:assumed-role/Admin/Richard-Roe-Managed",
"Description": "This is a SecureString parameter",
"Version": 2,
"Tier": "Advanced",
"Policies": [
{
"PolicyText": "{\"Type\":\"Expiration\",\"Version\":\"1.0\",\"Attributes\":{\"Timestamp\":\"2020-07-07T22:30:00Z\"}}",
"PolicyType": "Expiration",
"PolicyStatus": "Pending"
},
{
"PolicyText": "{\"Type\":\"ExpirationNotification\",\"Version\":\"1.0\",\"Attributes\":{\"Before\":\"12\",\"Unit\":\"Hours\"}}",
"PolicyType": "ExpirationNotification",
"PolicyStatus": "Pending"
}
]
},
{
"Name": "MyStringListParameter",
"Type": "StringList",
"LastModifiedDate": 1582154764.222,
"LastModifiedUser": "arn:aws:iam::111222333444:user/Mary-Major",
"Description": "This is a StringList parameter",
"Version": 1,
"Tier": "Standard",
"Policies": []
},
{
"Name": "MyStringParameter",
"Type": "String",
"LastModifiedDate": 1582154711.976,
"LastModifiedUser": "arn:aws:iam::111222333444:user/Alejandro-Rosalez",
"Description": "This is a String parameter",
"Version": 1,
"Tier": "Standard",
"Policies": []
},
{
"Name": "latestAmi",
"Type": "String",
"LastModifiedDate": 1580862415.521,
"LastModifiedUser": "arn:aws:sts::111222333444:assumed-role/lambda-ssm-role/Automation-UpdateSSM-Param",
"Version": 3,
"Tier": "Standard",
"Policies": []
}
]
}
```
**Example 2: To list all parameters matching specific metadata**
This `describe-parameters` example lists all parameters matching a filter.
aws ssm describe-parameters --filters "Key=Type,Values=StringList"
Output:
```
{
"Parameters": [
{
"Name": "MyStringListParameter",
"Type": "StringList",
"LastModifiedDate": 1582154764.222,
"LastModifiedUser": "arn:aws:iam::111222333444:user/Mary-Major",
"Description": "This is a StringList parameter",
"Version": 1,
"Tier": "Standard",
"Policies": []
}
]
}
```
For more information, see [Searching for Systems Manager Parameters](https://docs.aws.amazon.com/systems-manager/latest/userguide/parameter-search.html) in the *AWS Systems Manager User Guide*.
+ For API details, see [DescribeParameters](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ssm/describe-parameters.html) in *AWS CLI Command Reference*.
------
#### [ Java ]
**SDK for Java 2.x**
There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/ssm#code-examples).
```
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.ssm.SsmClient;
import software.amazon.awssdk.services.ssm.model.GetParameterRequest;
import software.amazon.awssdk.services.ssm.model.GetParameterResponse;
import software.amazon.awssdk.services.ssm.model.SsmException;
/**
* Before running this Java V2 code example, set up your development
* environment, including your credentials.
*
* For more information, see the following documentation topic:
*
* https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
*/
public class GetParameter {
public static void main(String[] args) {
final String usage = """
Usage:
Where:
paraName - The name of the parameter.
""";
if (args.length != 1) {
System.out.println(usage);
System.exit(1);
}
String paraName = args[0];
Region region = Region.US_EAST_1;
SsmClient ssmClient = SsmClient.builder()
.region(region)
.build();
getParaValue(ssmClient, paraName);
ssmClient.close();
}
public static void getParaValue(SsmClient ssmClient, String paraName) {
try {
GetParameterRequest parameterRequest = GetParameterRequest.builder()
.name(paraName)
.build();
GetParameterResponse parameterResponse = ssmClient.getParameter(parameterRequest);
System.out.println("The parameter value is " + parameterResponse.parameter().value());
} catch (SsmException e) {
System.err.println(e.getMessage());
System.exit(1);
}
}
}
```
+ For API details, see [DescribeParameters](https://docs.aws.amazon.com/goto/SdkForJavaV2/ssm-2014-11-06/DescribeParameters) in *AWS SDK for Java 2.x API Reference*.
------
#### [ PowerShell ]
**Tools for PowerShell V4**
**Example 1: This example lists all parameters.**
```
Get-SSMParameterList
```
**Output:**
```
Description :
KeyId :
LastModifiedDate : 3/3/2017 6:58:23 PM
LastModifiedUser : arn:aws:iam::123456789012:user/admin
Name : Welcome
Type : String
```
+ For API details, see [DescribeParameters](https://docs.aws.amazon.com/powershell/v4/reference) in *AWS Tools for PowerShell Cmdlet Reference (V4)*.
**Tools for PowerShell V5**
**Example 1: This example lists all parameters.**
```
Get-SSMParameterList
```
**Output:**
```
Description :
KeyId :
LastModifiedDate : 3/3/2017 6:58:23 PM
LastModifiedUser : arn:aws:iam::123456789012:user/admin
Name : Welcome
Type : String
```
+ For API details, see [DescribeParameters](https://docs.aws.amazon.com/powershell/v5/reference) in *AWS Tools for PowerShell Cmdlet Reference (V5)*.
------
#### [ Rust ]
**SDK for Rust**
There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/rustv1/examples/ssm#code-examples).
```
async fn show_parameters(client: &Client) -> Result<(), Error> {
let resp = client.describe_parameters().send().await?;
for param in resp.parameters() {
println!(" {}", param.name().unwrap_or_default());
}
Ok(())
}
```
+ For API details, see [DescribeParameters](https://docs.rs/aws-sdk-ssm/latest/aws_sdk_ssm/client/struct.Client.html#method.describe_parameters) in *AWS SDK for Rust API reference*.
------