2012-01-19.

What an amazing program rsync is: suitable for so many things, and 
such excellently thought-out options. 

The traditional one for me:   rsync -a -v -z --del [-n] A/ B/

A recent extra need, for a mirror (want [pseudo]-atomic updates, 
lots of reporting on speed and what's happening, certain permissions 
set at the destination regardless of source:

rsync  

	--compress
        --recursive
        --times
        --owner
        --group
        --chmod='go-w,Da+rx,Fa-x'
        --links
        --hard-links
        --sparse
        --acls
        --xattrs
        --delete-after
        --delay-updates
        --partial-dir=.rsync-partial
        --partial
        --fuzzy
        --stats
        --itemize-changes
        --progress
        --verbose
        --human-readable
        --human-readable

	 rsync://...../ /local/.../