Get an S3 Presigned Url with AWS CLI
Borislav Hadzhiev
Last updated: Sep 30, 2021
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How to get an S3 Presigned Url with AWS CLI #
To get an S3 presigned URL using the AWS CLI, invoke the
aws s3 presign s3://my-bucket/file.txt command, where you specify the entire
path of the object in the S3 URI.
aws s3 presign s3://YOUR_BUCKET/your-file.txt
By default the presigned url is valid for 3600 seconds, which is 60 minutes.
If you click on the URL, you will see the contents of the file in your browser.
s3://YOUR_BUCKET/your-folder/your-file.txtTo configure when the presigned url should expire, use the --expires-in
parameter. It allows us to specify the number of seconds the presigned url
should be valid for.
aws s3 presign s3://YOUR_BUCKET/your-file.txt --expires-in 10
In the example above, the presigned URL will only be valid for 10 seconds. If
the url is accessed after 10 seconds, it returns an AccessDenied error.
Note that the
s3 presign
command only generates GET presigned urls, if you want to upload files to an
S3 bucket using POST or PUT presigned urls, you have to use the AWS SDK.
To learn more about uploading files to an S3 bucket, using presigned urls, check out my other articles:
- How to upload Files to S3 in React using presigned urls
- Tips and Tricks for using S3 presigned POST urls on AWS
Further Reading #
- Get the Size of a Folder in AWS S3 Bucket
- List all Files in an S3 Bucket with AWS CLI
- How to Get the Size of an AWS S3 Bucket
- Add a Bucket Policy to an AWS S3 Bucket
- Configure CORS for an AWS S3 Bucket
- Allow Public Read access to an AWS S3 Bucket
- Copy a Local Folder to an S3 Bucket
- Download a Folder from AWS S3
- How to Rename a Folder in AWS S3
- Copy Files and Folders between S3 Buckets
- How to Delete a Folder from an S3 Bucket
- Count Number of Objects in S3 Bucket
- Download an Entire S3 Bucket - Complete Guide
- AWS CDK Tutorial for Beginners - Step-by-Step Guide
- How to use Parameters in AWS CDK
