parse_nmap

Scenario.

Your team is conducting a service usage survey on a network, in order to determine any unnecessary running services. Given only the nmap results provided, you need to successfully parse the data in a manner that determines the number of users per service.

Challenge Goal.

Develop a script that you can run on the provided nmap network scan results.
Your script needs to output each open service, and the applicable IP addresses for each service (i.e IPs to Service)

Example Output:

Service: ident Count: 1
===============================
192.168.33.236

Service: IIS Count: 3
===============================
192.168.33.205
192.168.33.227
192.168.33.229

--TRIMMED--

Grading.

100% - completely automated, functioning bash script with comments correctly detailing actions/purposes of script commands

Students will submit their script to their instructor for testing.

Check Points:
Service: HTTP Count: 21
Service: HTTPS Count: 8
Service: Unknown: Count 5

Include the following code in Bash script.

Student Bash scripts should have the standard authorship information and dynamic file referencing as shown below.

!#/bin/bash

# File:         lastname.sh
# Name:         Firstname Lastname
# Date:         YYYYMMDD (Date last modified)
# Desc:         Description of the purpose/function of the script
# Usage:        ./lastname.sh <nmap scan>
# Note:         Additional notes (as needed) for running the script or other info.

# Take a file argument to script for reference throughout the rest of the script.
FILE=$1

Hints.

Start with pseudocode first!
Watch the Bash Scripting Crash Course video.
man grep | grep -A3 '\-context='
Print line with a matching regex: awk '/string/{ print $0 }' $file
Print line after line matching regex: awk '/string/{ getline; print $0 }' $file
Print 9th character and on from substring of line w\ matching regex: awk '/string/{ getline; print substr($0,9) }' $file
Watch out for command bleed-over into other system output.