To mount Amazon S3 bucket as a filesystem on linux, you can use s3fs.
https://github.com/s3fs-fuse/s3fs-fuse
To install s3fs on Ubuntu/Debian, run
apt install s3fs
To mount an s3 buclet, create a password file with your AWS secret key and
echo ACCESS_KEY_ID:SECRET_ACCESS_KEY > ${HOME}/.passwd-s3fs chmod 600 ${HOME}/.passwd-s3fs
Then run
s3fs sokmount /home/boby/ -o passwd_file=${HOME}/.passwd-s3fs -o dbglevel=info -f -o curldbg -o endpoint=ap-southeast-1 -o url="https://s3-ap-southeast-1.amazonaws.com"
In above command replace
sokmount = bucket name
/home/boby/ = your mount point
ap-southeast-1 = AWS region where bucket is created.
See Amazon S3