Linux ping 网络范围并返回响应主机的最快方法？
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Fastest way to ping a network range and return responsive hosts?
提问by
Constraints:
1. Speed matters.
2. I am allowed to ping once.
限制条件：
1. 速度很重要。
2.我可以ping一次。
I'm debating whether to use Python or shellscripting. Is there a method faster than bash?
我正在争论是使用 Python 还是 shellscripting。有没有比 更快的方法bash？
Here is the current code,
这是当前的代码，
for ip in $(seq int1 int2); do
ping -c 1 xxx.xxx.xxx.$ip | grep "bytes from" &
done
Anything faster than this?
还有比这更快的吗？
采纳答案by Roman Newaza
You should use NMAP:
您应该使用 NMAP：
nmap -T5 -sP 192.168.0.0-255
回答by Sunny R Gupta
Try this for a unique list.
试试这个以获得一个独特的列表。
ping -c 5 -b 10.10.0.255 | grep 'bytes from' | awk '{ print $4 }' | sort | uniq
ping -c 5 -b 10.10.0.255 | grep 'bytes from' | awk '{ print $4 }' | sort | uniq
another method (fetches live hosts):
另一种方法（获取实时主机）：
fping -ag 192.168.1.0/24
fping -ag 192.168.1.0/24
回答by Mike Redrobe
The following (evil) code runs more than TWICE as fast as the nmap method
以下（邪恶）代码的运行速度是 nmap 方法的两倍以上
for i in {1..254} ;do (ping 192.168.1.$i -c 1 -w 5 >/dev/null && echo "192.168.1.$i" &) ;done
takes around 10 seconds, where the standard nmap
大约需要 10 秒，标准的 nmap
nmap -sP 192.168.1.1-254
takes 25 seconds...
需要 25 秒...
回答by brendonmartino
Try both of these commands and see for yourself why arp is faster:
尝试这两个命令，看看为什么 arp 更快：
PING:
平：
for ip in $(seq 1 254); do ping -c 1 10.185.0.$ip > /dev/null; [ $? -eq 0 ] && echo "10.185.0.$ip UP" || : ; done
对于 $(seq 1 254) 中的 ip；做 ping -c 1 10.185.0.$ip > /dev/null; [$? -eq 0 ] && echo "10.185.0.$ip UP" || :; 完毕
ARP:
ARP：
for ip in $(seq 1 254); do arp -n 10.185.0.$ip | grep Address; [ $? -eq 0 ] && echo "10.185.0.$ip UP" || : ; done
对于 $(seq 1 254) 中的 ip；做 arp -n 10.185.0.$ip | grep地址；[$? -eq 0 ] && echo "10.185.0.$ip UP" || :; 完毕
回答by DiegoRG
This script runs on Git Bash (MINGW64) on Windows and return a messages depending of the ping result.
此脚本在 Windows 上的 Git Bash (MINGW64) 上运行，并根据 ping 结果返回消息。
#!/bin/bash
# should be something like "19.62.55"
if [ -z "" ]
then
echo "No identify of the network supplied, i.e. 19.62.55"
else
ipAddress=
for i in {1..256} ;do
(
{
ping -w 5 $ipAddress.$i ;
result=$(echo $?);
} &> /dev/null
if [ $result = 0 ]; then
echo Successful Ping From : $ipAddress.$i
else
echo Failed Ping From : $ipAddress.$i
fi &);
done
fi
回答by Vilas Joshi
This is python code for the ping in range of the 192.168.0.0-192.168.0.100 . You can change for loop as you comfort.
这是 192.168.0.0-192.168.0.100 范围内 ping 的 python 代码。您可以根据需要更改 for 循环。
# -*- coding: utf-8 -*-
import socket
import os
import sys
up_ip =[] #list to store the ip-addresses of server online
for x in range(100): #here range is 0-100. You can change the range according to your comfort
server_ip = '192.168.0.'+ str(x)
rep = os.system('ping -c 1 ' + server_ip)
if rep == 0:
upip.append(server_ip)
print '*******************Server Is Up****************\n'
else:
print 'server is down \n'
print up_ip
回答by rudyrockstar
BSD's
BSD的
for i in $(seq 1 254); do (ping -c1 -W5 192.168.1.$i >/dev/null && echo "192.168.1.$i" &) ;done
对于我在 $(seq 1 254); do (ping -c1 -W5 192.168.1.$i >/dev/null && echo "192.168.1.$i" &) ;done
