curl
command to access assets in S3curl -I https://blah.com/blah.jpg
HTTP/1.1 200 OK
x-amz-id-2: vssCWUJOxWDwerweterwtfX6tAab/QXvLwLXFYSwhGRMi/cF7VlGcmwzve74N1UnJlH1M=
x-amz-request-id: 1C0F977DA71D72ED
Date: Wed, 13 May 2020 14:28:51 GMT
Last-Modified: Wed, 03 Aug 2016 14:27:58 GMT
ETag: "229a653a21e79454535ec8bf5609f5826"
Accept-Ranges: bytes
Content-Type: image/jpeg
Content-Length: 79486
Server: AmazonS3
--header "If-None-Match:229a653a21e79454535ec8bf5609f5826"