How to specify a log file for your Nmap data
Nmap allows you to scan at preset intervals and to log the output in various formats.
Step 1 Click the Files tab.
Step 2 Click the Output box.
Step 3 Browse for a path for the file.
Step 4 Name the file.
Step 5 Click a radio button to specify the file type.
Various formats are supported.
Normal Human readable format.
XML Outputs in XML format. The preferred format for maximum flexibility and portability.
Grep A format that allows searches.
All Outputs in all the above formats.
Append After each new scan appends the data rather than overwriting the existing file.