rsync is used to transfer and synchronise files between different systems. It can be efficient by only transferring parts of the files that differ.

Useful options

-r, –recursive

recurse into directories

–remove-source-files

sender removes synchronized files (non-dirs)

This will leave empty directories on the source side.

–progress

show progress during transfer

This option shows transfer rates, percent complete for the current file, and how many items remain to be transferred.

-c, –checksum

skip based on checksum, not mod-time & size