title: Spawning multiple sh scripts in tcl makes it parallel process or child process?
body: <p>I am spawning multiple sh (sipp) scripts from a tcl script . I want to know those scripts will run in parallel or as a child process? Because I want to run it in parallel.</p>
  
  <p>If I use threads extension then do I need to use any other packages along with that?</p>
  
  <p>Thanks in advance.</p>