Yes, we have options to download all the objects from an S3 bucket to your local machine. Before we do, make sure that the AWS-CLI package is installed in your local machine and configured with credentials are Access Key and Secret Key.

Install AWS-CLI Package:

Download the awscliv2.zip file using the curl command and extract it.



$ curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"



$ unzip awscliv2.zip


Install the package using the command below,

$ sudo ./aws/install -i /usr/local/aws-cli -b /usr/local/bin


After installed the package, check the version using the command below,

$ aws --version

Install AWS-CLI another method,

Alternatively, we have another option to install the awscli package which AWS recently released their Command Line Tools

$ sudo easy_install awscli


or

$ sudo pip install awscli


run config command and set the IAM role/user credentials,

$ aws configure


We have two options to copy the objects from S3 bucket to local machine, "CP" and "SYNC" and formats are here,
 
$ aws s3 cp s3://<source_bucket> <local_destination>   --recursive

$ aws s3 sync s3://<source_bucket> <local_destination>

So, now we use the commands below,



$ aws s3 cp s3://bucket_name/ .  --recurisve



$ aws s3 sync s3://bucket_name/ .  


If you use the Windows command prompt execute the command below,



$ aws s3 cp s3://bucket_name D:\destination --recursive



$ aws s3 sync s3://bucket_name/  D:\destination\