Question

我写了一些代码来ping服务器，但我不想在屏幕上输出。但即使将输出发送到/dev/null，我也会在屏幕上获得所有ping详细信息。

#!/usr/bin/python
import os
import sys
with open(sys.argv[1]) as servers:
    for host in servers:
        response = os.system("ping -q -c 1 "+host+">/dev/null 2>&1")
        if response==0:
            print(host)
        else:
            print(host+"is dead")

Answer 1

使用此：

import subprocess

def myping():
    with open(sys.argv[1]) as servers:
        for host in servers:
            p = subprocess.Popen(["ping", "-q", "-c", "1", host], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
            response = p.wait()
            if response==0:
                print(host+"is dead")
            else:
                print(host+"is up")

myping()

演示

>>> import subprocess 
>>> host = "google.com"
>>> p = subprocess.Popen(["ping", "-q", "-c", "1", host], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
>>> response = p.wait()
>>> print response
1

Answer 2

import subprocess
p = subprocess.Popen(["ping", "-q", "-c", "1", host], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
return_code = p.wait()

避免使用os.system。它已弃用，已过时。

如何发送ping到/ dev / null

2 个答案: