!7

p {
  S url = "https://www.youtube.com/watch?v=VCbTnSknDyQ";
  File outputFile = prepareProgramFile("youtube-dl.out");
  tailFile(outputFile, 1000, func(S s) {
    printNoNewLine(s);
  });
  backtickToFile("youtube-dl " + bashQuote(url), outputFile);
}