!7

p {
  F outputFile = prepareCacheProgramFile("jhat.out");
  makeEmptyFile(outputFile);
  Flag stopTail = tailFile(outputFile, 1000, voidfunc(S s) {
    printNoNewLine(fixNewLines(s));
  });
  // child process should exit when we exit
  backtickToFile("jhat " + smartJoin(args), outputFile);
  stopTai.raise();
}