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BASIC SCAN
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nmap [ip one] [ip two] [ip three] ...
nmap 192.168.1.17-30 // an ip range
nmap 192.168.3.* // all 255 address

nmap -iL target.txt // import from List/file

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AGRESSIVE SCAN
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nmap -A [ip address/domain nam]
nmap --traceroute [ip address/domain nam]
nmap -O [ip address/domain nam] //operating system
nmap -sV [ip address/domain nam] //Version of the services that are running

-F = fast scan //scans only about 1000
-p = to give it a port  or a range 20-25

nmap -p 20-25,80,443 [ip address/domain nam] //scan specific ports

nmap -p http,mysql [ip address/domain nam] //scan ports  by names
nmap -p- [ip address/domain nam] //scans every possible port // takes a looooong tim

nmap --open [ip address/domain nam] // scans only the open ports

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Saving scan results to a file
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nmap -F -oN Desktop/results.txt [ip address/domain nam] //N for saving in regular Text file //X for xml format

nmap -v [ip address/domain nam] //verbos