rsync -Pavuc <source> <target>
What does it mean?
-P --same as --partial --progress
-a, --archive archive mode; equals -rlptgoD (no -H,-A,-X)
-v, --verbose increase verbosity
-u, --update skip files that are newer on the receiver
-c, --checksum skip based on checksum, not mod-time & size-a includes:
-r, --recursive recurse into directories
-l, --links copy symlinks as symlinks
-p, --perms preserve permissions
-t, --times preserve modification times
-g, --group preserve group
-o, --owner preserve owner (super-user only)
-D --same as --devices --specials
--devices preserve device files (super-user only)
--specials preserve special files