Function untar

src/common/command_utils.cpp:150–169

Future<Nothing> untar(
    const Path& input,
    const Option<Path>& directory)
{
  vector<string> argv = {
    "tar",
    "-x",  // Extract/unarchive.
    "-f",  // Input file to extract/unarchive.
    input
  };

  // Add additional flags.
  if (directory.isSome()) {
    argv.emplace_back("-C");
    argv.emplace_back(directory.get());
  }

  return launch("tar", argv)
    .then([]() { return Nothing(); });
}


Future<string> sha512(const Path& input)