TCP Port Scanner
Let's write a TCP Port Scanner(YT): click me
It's simple
/// scan for single port
pscan -a 127.0.0.1 -s 443
/// scan for range of ports
pscan -a 127.0.0.1 -r 75-85
/// scan for list of ports
pscan -a 127.0.0.1 -l 80,443,1080,445