Update port_scanning.md

`nmap -vvv -p 80 201.210.67.0-100 -oG - | grep 80/open`

### Nmap scripts

This chapter could also be placed in Vulnerability-analysis and Exploitation. Because nmap scripting is a really versatile tool that can do many things. Here we will focus on it's ability to retrieve information that can be useful in the process to **find vulnerabilities** 

First locate the nmap scripts. Nmap scripts end in **nse**. For Nmap script engine.

```

locate *.nse

```

The syntax for running a script is:

```

nmap --script scriptname 192.168.1.101

```

To find the "man"-pages, the info about a script we write:

```

nmap -script-help http-vuln-cve2013-0156.nse

```

**Run multiple scripts**

Can be run by separating the script with a comma

```

nmap --script scriptone.nse,sciprt2.nse,script3.nse 192.168.1.101

```

Run the default scripts

```

nmap -sC example.com

```