Open console.aws.amazon.com/lambda/

Create a Function

create a new script file in the console with any name and adjust the name in the below handler

import os
import json
import subprocess

def lambda_handler(event, context):
    body = event.get('body', '')
    # Execute backup script
    #change file name 
    subprocess.check_call(["cp ./backup.sh /tmp/backup.sh && chmod 755 /tmp/backup.sh"], shell=True)
    subprocess.check_call(["/tmp/backup.sh", "myfoldername" ])


    return {
            'statusCode': 200,
            'body': 'Bash script Run successfully'
    }

same file backup.sh

#!/bin/bash
# Input Variables
FOLDERNAME=$1

# we can Use an environment variable here pass in lambda

echo $FOLDERNAME  > /tmp/echoresult.txt

ls -l

cat /tmp/echoresult.txt