cd

    def cd() : Unit = {
      val outer = new Breaks
      outer.breakable {
        while(true)
        {
          out.writeUTF("Insert name of the directory that you want to navigate to: ")
            out.flush()
           var dir :String = in.readUTF()
            var dirToBE:String = root.replace('\\','/')
            println(dir)
            val cd = new File(System.getProperty("user.dir", dirToBE+"/"+dir))
              if(cd.exists && cd.isDirectory)
              {
                System.setProperty("user.dir", dirToBE+"/"+dir)
                println(System.getProperty("user.dir"))
                out.writeUTF("Current directory is: "+System.getProperty("user.dir"))
                out.flush()
              }else{
                out.writeUTF("Directory does not exist")
                out.flush()
              }

            outer.break
        }
      }
    }