chdir $staging_dir                    or die "chdir: $!";
system qw(svn update base)           and die "up base: $!";
system qw(svn update hostgroup)      and die "up hostgroup: $!";
system qw(svn update host)           and die "up host: $!";
system $copier_prog, $staging_dir,
       $pre_launch_dir, $copier_conf and die "copy: $!";
system $perm_prog, -c => $perm_conf  and die "permissions: $!";
system qw(rsync -avz --exclude=.svn --delete-after),
       $pre_launch_dir, $live_dir    and die "rsync: $!";