Using s3cmd, how do I retreived the newest folder by "Last modfied" date in an s3 directory

Question

I have a directory containing folders whose folder names are created using timestamps. I want use s3cmd to find the file with the most recent "Last Modified" value. If that is not possible, are the solutions to these previous questions the way to go? looking for s3cmd download command for a certain date

Using S3cmd, how do I get the first and last file in a folder?

Can s3cmd do this natively, or do I have to retrieve all the folder names and sort through them?

**Side-note:** These days, it is recommended to use the official AWS CLI rather than `s3cmd`. — John Rotenstein, May 20 '20 at 04:59

John Rotenstein · Accepted Answer · 2020-05-25T22:39:33.400

1

Using the AWS Command-Line Interface (CLI), you can list the most recent file with:

aws s3api list-objects --bucket my-bucket-name --prefix folder1/folder2/ --query 'sort_by(Contents, &LastModified)[-1].Key' --output text

The first (oldest) object would be:

aws s3api list-objects --bucket my-bucket-name --prefix folder1/folder2/ --query 'sort_by(Contents, &LastModified)[0].Key' --output text

edited May 25 '20 at 22:39

answered May 20 '20 at 04:59

John Rotenstein

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Thanks for the solution. The `--query` needs to be moved after the prefix. Could you correct for future readers? – weatherpattern May 25 '20 at 17:03
Oopsie! Now fixed. – John Rotenstein May 25 '20 at 22:39

Using s3cmd, how do I retreived the newest folder by "Last modfied" date in an s3 directory

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