Selective file download in AWS S3 CLI

This command will copy all files starting with 2015-08-15:

aws s3 cp s3://BUCKET/ folder --exclude "*" --include "2015-08-15*" --recursive

If your goal is to synchronize a set of files without copying them twice, use the sync command:

aws s3 sync s3://BUCKET/ folder

That will copy all files that have been added or modified since the previous sync.

In fact, this is the equivalent of the above cp command:

aws s3 sync s3://BUCKET/ folder --exclude "*" --include "2015-08-15*"

References:

Related