s3cmd

Get pip

 curl -O https://bootstrap.pypa.io/get-pip.py
 python get-pip.py

Install s3cmd (currently installed on rjs1 VM at CERN)

 sudo pip install s3cmd
 s3cmd --configure
  accessKey='xx'  
  secretKey='xx'

Example use (make bucket, list bucket, put file in bucket):

s3cmd mb s3://rjsBucket
s3cmd ls
  2017-01-12 22:04  s3://rjsBucket

s3cmd put test.txt s3://rjsBucket