bash 如何使用 nmap 确定给定范围内的哪些 IP 具有端口 80？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/3773183/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to determine which IPs in a given range have port 80 using nmap?
提问by bananah
I'm new to bash scripting and I'm trying to get this working:
我是 bash 脚本的新手，我正在尝试使其正常工作：
Scanning an IP range for finding devices with the port 80 open... I think it has to look like this:
扫描 IP 范围以查找打开端口 80 的设备...我认为它必须如下所示：
#!/bin/bash
echo -----------------------------------
for ip in 192.168.0.{1,.255}; do
nmap -p80 192.168.0.1
if #open; then
echo "{ip} has the port 80 open"
else
#do nothing
fi
done
echo -----------------------------------
exit 0
I also just want to see the results like this:
我也只想看到这样的结果：
-----------------------------------
192.168.0.1 has the port 80 open
192.168.0.10 has the port 80 open
192.168.0.13 has the port 80 open
192.168.0.15 has the port 80 open
-----------------------------------
(So without errors or nmap's normal outputs..)
（所以没有错误或nmap正常输出..）
Can someone help me for this?
有人可以帮我吗？
回答by Manuel Faux
nmapcomes with a nice output parameter -oG(grepable output) which makes parsing more easy. Also it is not necessary to iterate through all IP addresses you want to scan. nmap is netmask aware.
nmap带有一个很好的输出参数-oG（grepable 输出），这使得解析更容易。此外，没有必要遍历要扫描的所有 IP 地址。nmap 可以识别网络掩码。
Your example can be written as:
你的例子可以写成：
nmap -p80 192.168.0.0/24 -oG - | grep 80/open
The -oGenables the grepable output, and -specifies the file to output to (in this case stdout). The pipe symbol redirects the output of nmap (stdout) to grep, which only returns lines containing 80/openin this case.
该-oG使能的grepable输出，并且-指定文件输出到（在这种情况下stdout）。管道符号将 nmap (stdout) 的输出重定向到 grep，它只返回包含80/open在这种情况下的行。
回答by Mohamed
Try this
尝试这个
nmap --open -p80 192.168.0.*
The --openwill only list host with port 80 open. This way you save having to check in your shell script as filtering is already done by nmap itself.
该--open只列出主机端口80开启。这样你就不必检查你的 shell 脚本，因为过滤已经由 nmap 本身完成了。
