Grsync: Great Alternative to Robocopy

Grsync is a great alternative to Robocopy on a Linux system.  You could also use Rsync at the command line.  Regardless of which version you use don't forget that Direcotories need a trailing "/".

Rsync Switches
To see all the available options, type rsync --help at the command line. Here are a few of the options:

• -r, --recursive - recurse into directories
• -u, --update - skip files that are newer on the receiver
• -n, --dry-run - show what would have been transferred
• --existing - only update files that already exist on receiver
• --delete - delete files that don't exist on the sending side
• -z, --compress - compress file data during the transfer
• --exclude=PATTERN - exclude files matching PATTERN

You can find even more examples of switches here.