How do I move data around?

Put a directory:
   mc cp -r ./dbgap-test \
                   s3cache/dbgap-test

Copy a single file:
   mc cp  s3cache/dbgap-test/test_file \
                  ./dbgap-test-file.txt
   mc cp  ./dbgap-test-file.txt \
                 s3secure/dbgap-test/dbgap-test-file.txt

Stream data from one storage platform to another:
   mc mirror s3secure/dbgap-test \
                        tier2/dbgap-test