aws-s3-presign:tldr:262fa

The command "aws s3 presign s3://${bucket_name}/${filename}" is used to generate a pre-signed URL for an object stored in an Amazon S3 bucket.

Here's a breakdown of the command:

• "aws" is the AWS Command Line Interface (CLI) command.
• "s3" is the service being accessed, which is Amazon S3.
• "presign" is the specific command to generate a pre-signed URL.
• "s3://${bucket_name}/${filename}" is the S3 object's URL that you want to generate a pre-signed URL for. "${bucket_name}" is the name of the S3 bucket where the object is stored, and "${filename}" is the name of the specific file or object.

When you run this command, the AWS CLI will authenticate with your AWS account, access the specified S3 bucket, and generate a pre-signed URL for the given object. A pre-signed URL is a time-limited URL that allows accessing the object directly without requiring any additional authentication. The generated URL can be used by anyone who has it to perform authorized operations (e.g., download, upload) on the S3 object until it expires.