How can you restore a previous version of a file stored in Amazon S3?

In Amazon S3, you can restore a previous version of a file if versioning is enabled for the bucket. When versioning is enabled, all versions of an object are saved.

To restore a previous version:

1. In the AWS S3 console, enable the display of versions (Show versions).
2. Find the desired file and select the version by date or version ID.
3. Download this version or make it current by copying or renaming it.

If versioning was not enabled, restoring previous versions cannot be done using S3 tools.

Example AWS CLI command for copying a specific version:

aws s3 cp s3://bucket-name/file.txt s3://bucket-name/file.txt --version-id <version-id>