如何使用 nmap 确定给定范围内的哪些 IP 具有端口 80？
我是 bash 脚本新手，我正在尝试使其正常工作：
扫描 IP 范围以查找端口 80 打开的设备... 我认为它必须看起来像这样：
#!/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
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
-----------------------------------
所以没有错误或 nmap 的正常输出..）
有人可以帮助我吗？
I'm new to bash scripting and I'm trying to get this working:
Scanning an IP range for finding devices with the port 80 open...
I think it has to look like this:
#!/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:
-----------------------------------
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..)
Can someone help me for this?
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nmap附带了一个很好的输出参数-oG（grepable 输出），这使得解析更加容易。此外，无需遍历所有要扫描的 IP 地址。 nmap 可以识别网络掩码。您的示例可以写为：
-oG启用 grepable 输出，并且-指定要输出到的文件（在本例中标准输出）。管道符号将 nmap (stdout) 的输出重定向到 grep，在这种情况下，它仅返回包含80/open的行。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.Your example can be written as:
The
-oGenables the grepable output, and-specifies the file to output to (in this casestdout). The pipe symbol redirects the output of nmap (stdout) to grep, which only returns lines containing80/openin this case.试试这个
--open将仅列出端口 80 打开的主机。这样您就不必签入 shell 脚本，因为过滤已经由 nmap 本身完成。https://nmap.org/book/man-briefoptions.html
Try this
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.https://nmap.org/book/man-briefoptions.html