title: lldb equivalent of gdb's "follow-fork-mode" or "detach-on-fork"
body: <p>Does lldb have an equivalent to either of these gdb directives?
  I'm trying to make it follow a child process instead of the parent without having to do this manual process:</p>
  
  <ol>
  <li>break on fork</li>
  <li>pgrep for the child process</li>
  <li>spin up another lldb process and attach to the child</li>
  <li>continue the parent</li>
  </ol>
  
  <p>Some googling did not provide any insight.</p>
  
  <p>Context: I'm using NSTask &amp; injecting a dylib using dyld, and want to set breakpoints in my library without lots of pain. I'm pretty sure NSTask uses fork() internally.</p>