code: def sh(cmd):
      """Execute command in a subshell, return status code."""
      print("--------------------------------------------------")
      print(f"Executing: {cmd}")
      print("--------------------------------------------------")
      return check_call(cmd, shell=True)
  
imports: import os
  import re
  import sys
  from os import chdir
  from subprocess import check_call
label_desc: Use image node_id 1 for calling a global function with example usage: sh(cmd) and returns: check_call