code: def exec_cmd(ip, cmd):
      cmd = "ssh -o StrictHostKeyChecking=no " + ip + " '" + cmd + "'"
      subprocess.check_call(cmd, shell=True)
  
file_path: dgl/tools/copy_files.py
imports: import argparse
  import copy
  import json
  import logging
  import os
  import signal
  import stat
  import subprocess
  import sys
label_desc: Use image node_id 2 for calling a global function with example usage: exec_cmd(ip, cmd) without return types