198 def Command(cmd, args="", prefix="", pipe=True, cwd=None):  argument
199   cwd = cwd or os.getcwd()
203   print "in %s" % cwd
207       return subprocess.check_output(cmd_line, shell=True, cwd=cwd)
209       return subprocess.check_call(cmd_line, shell=True, cwd=cwd)
246   def Command(self, cmd, args="", prefix="", pipe=True, cwd=None):  argument
247     return Command(cmd, args, prefix, pipe, cwd=cwd)
501   def Command(self, name, args, cwd=None):  argument
503         name, args, "", True, cwd=cwd or self.default_cwd)
506   def Git(self, args="", prefix="", pipe=True, retry_on=None, cwd=None):  argument
508         "git", args, prefix, pipe, cwd=cwd or self.default_cwd)
520           cwd=self.default_cwd)
546   def DeleteBranch(self, name, cwd=None):  argument
547     for line in self.GitBranch(cwd=cwd).splitlines():
551           self.GitDeleteBranch(name, cwd=cwd)
557   def InitialEnvironmentChecks(self, cwd):  argument
559     if not os.path.exists(os.path.join(cwd, ".git")):  # pragma: no cover
561                "deleting it and rerunning this script." % cwd)
763       self.Command("fetch", "v8", cwd=self._options.work_dir)