This assumes you have already configured the aws command line tool. If not, check out my article on Getting Started with the AWS CLI.

The aws lambda list-functions command can be used to list the Lambda Functions you have created.

aws lambda list-functions

And here is an example of how to limit the output using the --query option.

aws lambda list-functions --query 'Functions[?FunctionName==`myfunction`]'

Something like this should be returned.

{
    "Functions": [
        {
            "TracingConfig": {
                "Mode": "PassThrough"
            },
            "Version": "$LATEST",
            "CodeSha256": "/ur2jHd199ldQbP+Y20sw3kIHhaWwnPY6CQvSwZ6Kco=",
            "FunctionName": "myfunction",
            "MemorySize": 128,
            "RevisionId": "741c094a-cff2-4cdb-a5b6-110a900e1a43",
            "CodeSize": 529507,
            "FunctionArn": "arn:aws:lambda:us-east-1:123456789012:function:myfunction",
            "Handler": "app.lambda_handler",
            "Role": "arn:aws:iam::123456789012:role/myfunction",
            "Timeout": 3,
            "LastModified": "2023-11-16T02:52:04.978+0000",
            "Runtime": "python3.9",
            "Description": ""
        }
    ]
}

The aws lambda get-function command can be used to list a specific function, including the function location.

~]$ aws lambda get-function --function-name myfunction
{
    "Code": {
        "RepositoryType": "S3",
        "Location": "https://prod-04-2014-tasks.s3.us-east-1.amazonaws.com/snapshots/713542074252/myfunction-dcf3f554-6f77-440a-a8c8-8d95376a473a?versionId=_7iwZAkyxad1zLLfEnT4PQbq6S1I.tjR&X-Amz-Security-Token=IQoJb3JpZ2lu.....bb9e"
    },
    "Configuration": {
        "Layers": [
            {
                "CodeSize": 393575,
                "Arn": "arn:aws:lambda:us-east-1:123456789012:layer:paramiko:1"
            }
        ],
        "TracingConfig": {
            "Mode": "PassThrough"
        },
        "Version": "$LATEST",
        "CodeSha256": "5kHtMyCmdf31fSnR+BaNYhOn59MQp20WHvTJD9W6bCI=",
        "FunctionName": "myfunction",
        "LastUpdateStatus": "Successful",
        "MemorySize": 128,
        "RevisionId": "194909d6-a542-4341-a17f-9c5efbb49e81",
        "CodeSize": 1819,
        "FunctionArn": "arn:aws:lambda:us-east-1:123456789012:function:myfunction",
        "State": "Active",
        "Handler": "lambda_function.lambda_handler",
        "Role": "arn:aws:iam::123456789012:role/service-role/paramiko-role-lv0c9ra5",
        "Timeout": 3,
        "LastModified": "2023-12-15T02:01:18.000+0000",
        "Runtime": "python3.11",
        "Description": ""
    }
}