chdir("$staging_directory")
    or die "Could not change directory to $staging_directory: $!\n";
system("svn", "update", "base")
    or die "Could not svn update base: $!\n";
system("svn", "update", "hostgroup")
    or die "Could not svn update hostgroup: $!\n";
system("svn", "update", "host")
    or die "Could not svn update host: $!\n";
system("$copier_program_location", "$staging_directory", "$pre_launch_directory", "$copier_conf_file")
    or die "Could not run copier $copier_program_location: $!\n";
system("$permissions_program_location", "-c", "$permissions_conf_file")
    or die "Could not run permissions program $permissions_program_location: $!\n";
system("rsync", "-avz", "--exclude=.svn", "--delete-after", "$pre_launch_directory", "$live_directory")
    or die "Could not perform rsync from $pre_launch_directory to $live_directory: $!\n";