code: def run_cmd(cmd_str):
      """run command"""
      os.environ["PATH"] = "/usr/local/bin:/bin:/usr/bin:/sbin/"
      process = subprocess.Popen(cmd_str, shell=True, env=os.environ)
      return process
  
file_path: ogb/examples/lsc/wikikg90m/dgl-ke-ogb-lsc/python/dglke/dist_train.py
imports: import os
  import stat
  import sys
  import subprocess
  import argparse
  import socket
  from .utils import CommonArgParser
label_desc: Use image node_id 4 for calling a global function with example usage: run_cmd(cmd_str) and returns: process