我使用Python( OSX Python 2.7.10) ssh到Debian机器( Python 2.7.9)中,然后运行一个bash脚本(./capture)。bash脚本包含一些tcpdump命令。我不能解决的问题是如何在终端上显示运行bash脚本的实时结果。
#!/usr/bin/env python3
import subprocess, os
output = subprocess.run(["ssh", "ju@192.168.199.125", "sudo ./capture"])
print(output)
我可以通过ssh成功地运行脚本,但没有得到任何输出。当我按CTRL C键时,我得到以下跟踪信息:
**^CTraceback (most recent call last):
File "/Users/junesjoseph/run.py", line 3, in <module>
output = subprocess.run(["ssh", "junes@192.168.199.125", "sudo ./capture"])
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 405, in run
stdout, stderr = process.communicate(input, timeout=timeout)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 835, in communicate
self.wait()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 1457, in wait
(pid, sts) = self._try_wait(0)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 1404, in _try_wait
(pid, sts) = os.waitpid(self.pid, wait_flags)
KeyboardInterrupt**
任何帮助都是非常感谢的。谢谢
发布于 2018-09-04 19:40:04
subprocess.run
返回的对象是一个CompletedProcess
对象,它的属性包含已完成进程的stdout
和stderr
。您不想直接打印它,但您可以使用它来获取您想要打印的属性。
import subprocess # no reason to import os
subssh = subprocess.run(["ssh", "ju@192.168.199.125", "sudo ./capture"],
# Set up for capturing stdout and stderr
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
# Add commonly useful attributes
check=True, universal_newlines=True)
print(subssh.output)
如果您真的只想在标准输出上显示输出,那么捕获它以便打印它基本上是多余的。只需将其设置为直接显示,只需不将stdout
或stderr
设置为任何值:
subssh = subprocess.run(["ssh", "ju@192.168.199.125", "sudo ./capture"],
# Don't set up for capturing -- leave stdout and stderr alone
check=True, universal_newlines=True)
也许也可以看看Running Bash commands in Python,在那里我发布了关于subprocess
常见问题的更详细的答案。
https://stackoverflow.com/questions/52156700
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