Is there a way to upload a large ebook (above 100MB) like epub/mobi to Amazon?
I already try uploading to Amazon, but it says the file exceeds 20MB.
A tool like s3cmd is what you need.
S3cmd is a free command line tool and client for uploading, retrieving and managing data in Amazon S3 and other cloud storage service providers that use the S3 protocol, such as Google Cloud Storage or DreamHost DreamObjects. It is best suited for power users who are familiar with command line programs. It is also ideal for batch scripts and automated backup to S3, triggered from cron, etc.
simple example below:
s3cmd put file0-1.epub s3://BUCKET_NAME_HERE/test-upload.epub
Assuming you already configured aws key and secret through aws configure