static L<Process> backtickToFile_dependent_procs = synchroList();

static void backtickToFile_dependent(S cmd, File outFile) {
  Process p = backtickToFile(cmd, outFile);
  backtickToFile_dependent_procs.add(p);
}

static void cleanMeUp_backtickToFile_dependent() {
  print("cleanMeUp_backtickToFile_dependent " + l(backtickToFile_dependent_procs));
  for (Process p : backtickToFile_dependent_procs) {
    print("Destroying child process: " + p);
    p.destroy();
  }
}