Python-调用系统指令小记

 import subprocess
 def exec_command(cmd, log_path, **kwargs):
     with open(log_path, 'w') as f:
         p = subprocess.Popen(cmd,
                              shell=True,
                              stdout=f.fileno(),
                              stderr=f.fileno(),
                              executable='/bin/bash',
                              **kwargs)
     p.communicate() #立即阻塞父进程，直到子进程结束
     if p.returncode != 0:
         print('cmd: %s execute failed', cmd)
     else:
         print('execute command: %s finished', cmd)
     return p.returncode

详细介绍subprocess模块：https://www.cnblogs.com/Security-Darren/p/4733368.html