static int backtick_exitValue;
static boolean backtick_verbose;

public static String backtick(String cmd) ctex {
  File outFile = File.createTempFile("_backtick", "");
  backtickToFile(cmd, outFile);
  S result = loadTextFile(outFile.getPath(), "");
  if (backtick_verbose)
    print("[[\n" + result + "]]");
  ret result;
}

public static void backtickToFile(String cmd, File outFile) ctex {
  File scriptFile = File.createTempFile("_backtick", isWindows() ? ".bat" : "");

  String command = cmd + " >" + bashQuote(outFile.getPath()) + " 2>&1";
  //Log.info("[Backtick] " + command);
  try {
    if (backtick_verbose)
      print("backtick: command " + command);
    saveTextFile(scriptFile.getPath(), command);
    String[] command2;
    if (isWindows())
      command2 = new String[] { scriptFile.getPath() };
    else
      command2 = new String[] { "/bin/bash", scriptFile.getPath() };
    if (backtick_verbose)
      print("backtick: command2 " + structure(command2));
    Process process = Runtime.getRuntime().exec(command2);
    try {
      process.waitFor();
    } catch (InterruptedException e) {
      throw new RuntimeException(e);
    }
    backtick_exitValue = process.exitValue();
    if (backtick_verbose)
      System.out.println("Process return code: " + backtick_exitValue);
  } finally {
    scriptFile.delete();
  }
}