As a migratory systems engineer, I have lived, or stayed extensively, in cities all over my country, The United States of America. Due to this, I belong to many mailing lists and technical groups in CONUS (CONtinental United States.) One of the groups I belong to is the the DCLUG, or more extensively stated, the Washington, DC Linux Users Group. A recent dialogue of correspondence covered a very mundane topic; the topic of “rsync,” and it’s behavior while trying to do incremental copies. A member of the group, a Mr. Michael Henry, replied with a very in-depth answer and I felt it should be recorded for posterity’s sake, as even I, being a Unix/Linux user for over 20 years, learned some rsync nuance from this walk-through. You will find the contents of his reply copied here.