How to save results to file?

To save results to a file in a Linux terminal, you can use output redirection. Here’s how you can do it:

Using > to overwrite a file:
```
command > filename.txt
```
This will run command and save the output to filename.txt, overwriting it if it already exists.
Using >> to append to a file:
```
command >> filename.txt
```
This will run command and append the output to filename.txt without overwriting existing content.

If you want to save the output of an nmap scan to a file:

nmap localhost > nmap_scan.txt

This command will save the scan results to nmap_scan.txt. You can then view the contents of the file using:

cat nmap_scan.txt

Let me know if you need further assistance!