nmap -sV --open -oA nibbles_initial_scan TARGET
" ======== about command ========
-sV : service enumeration scan agains teh default port 1,1000 ports.
--open : only return open ports.
-oA : include XML output, greppable format, and text output.
nibbles_initial_scan
TARGET : domain or ip target
"Check which ports Nmap scans
nmap -v -oG -
" ======== about command ========
-v : verbose output.
-oG : output scan in grappable format to stdout.
- : scan location.
"