my $rsync_cmd = "rsync -vza --delete --delete-excluded $exclude_opts $conf{dir_backup_from} $mountpoint_reversed_enc";

system($rsync_cmd);

##</code><code>##

my @rsync_cmd = (
   'rsync',
   '-vza',
   '--delete',
   '--delete-excluded',
   split(' ', $exclude_opts),
   $conf{dir_backup_from},
   $mountpoint_reversed_enc,
);

system(@rsync_cmd);