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I'm writing a script to get netstat status using subprocess.check_output.

cmd = 'netstat -nlpt' result = subprocess.check_output(cmd, shell=True, timeout=1800) print(result.decode('utf-8'))

The above is running perfectly. Is there any way to get the live-streaming output. I have heard poll() function does this job. In live output from subprocess command they are using popen but i'm using check_output please some one help me on this issue. Thank you!

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  • Actually no, they are using Popen and here i'm using check_output Commented Jun 29, 2020 at 14:28
  • You can't using check_output. Commented Jun 29, 2020 at 14:31
  • Why do you use check_output when you want life output instead? Commented Jun 29, 2020 at 14:35
  • Please do not edit your question in a way that changes its topic. This has invalidated previous answers. Commented Jun 30, 2020 at 9:57
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    Sorry for that i will ask a new question Commented Jun 30, 2020 at 9:59

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From this answer:

The difference between check_output and Popen is that, while popen is a non-blocking function (meaning you can continue the execution of the program without waiting the call to finish), check_output is blocking.

Meaning if you are using subprocess.check_output(), you cannot have a live output.

Try switching to Popen().

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