Cacher is the code snippet organizer for pro developers

rsync -avxHAXh --safe-links --numeric-ids /source /dest/

The options are:

• -a : all files, with permissions, etc...
  archive mode; equals -rlptgoD (no -H,-A,-X)
• -v : verbose, mention files
• -x : stay on one file system
• -H : preserve hard links (not included with -a)
• -A : preserve ACLs/permissions (not included with -a)
• -X : preserve extended attributes (not included with -a)
• -h, --human-readable : output numbers in a human-readable format
• --safe-links : Duplicate safe symlinks and skip unsafe ones.
  If --links is specified, then symlinks are recreated with the same target on the destination.
  Note that --archive implies --links.
  --links --safe-links : Duplicate safe symlinks and skip unsafe ones.
• --numeric-ids : don't map uid/gid values by user/group name
• --progress : show progress during transfer
  use only with network transfers, otherwise it slows down the process

Sources:

• Copy entire file system hierarchy from one drive to another
• Linux and Unix rsync command