CODEWITHSUNDEEP
bashparsingawknmap
Michael003
Michael003

Reputation: 442

Nmap bash dynamic create files

I'm doing a script that uses nmap to get all the devices on a ip address range and their mac address. I want to create a file for each device, like IPaddress_macaddress. I did that to get the values but I don't know how I can dynamically create files.

sudo nmap -n -sP 192.168.1.* | 
awk '/Nmap scan report/{printf $5;printf " ";getline;getline;printf $3;}' > file.txt

This prints on file.txt : 

192.168.1.10 DC:EX:03:0S:4B:31
192.168.1.11 A4:2G:8C:E8:5A:65
192.168.1.32 9C:80:GF:J0:53:6F
192.168.1.23 64:7C:54:CC:SD:C4
192.168.1.77 256

The format of this file is 

ipaddress macaddress

I want to parse that file to create for each line a new file with the name of the content of each line, adding an underscore between the ipaddress and the macaddress. To correspond to ipaddress_macaddress.txt

So, for that file.txt, with a script, I want it to create 192.168.1.10_DC:EX:03:0S:4B:31.txt etc

I don't know how can I parse it intelligently

Upvotes: 0

Views: 398

Answers (2)

Raman Sailopal
Raman Sailopal

Reputation: 12877

As an awk onliner you could do:

nmap -n -sP 192.168.1.* | awk '{ if ($0 ~ /Nmap scan/) { ip=$5 } if ($0 ~ /MAC/) { mac=$3;det[mac]=ip } } END { for ( i in det ) { system("echo \""i" "det[i]"\" > "i"_"det[i]".txt") } }'

This will take the output from nmap and then search for "Nmap scan" and place the ip address in the variable ip and then "MAC" placing the mac address in mac. An array is then created with the ip address and the MAC address. This is then looped through and the awk system function is utilised to create the files with the ip and MAC addresses.

Upvotes: 1

jas
jas

Reputation: 10865

$ ls
file

$ while read ip mac; do touch ${ip}_${mac}.txt; done < file

$ ls
192.168.1.10_DC:EX:03:0S:4B:31.txt  192.168.1.23_64:7C:54:CC:SD:C4.txt 192.168.1.77_256.txt
192.168.1.11_A4:2G:8C:E8:5A:65.txt  192.168.1.32_9C:80:GF:J0:53:6F.txt  file

Upvotes: 1

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