PortFU is a bash implementation of a port scanner

        $ git clone https://github.com/SxNade/PortFU
        $ cd PortFU
        $ chmod +x portfu
        
        $ ./portfu <host-ip> <optional-time-delay-in-seconds>

This one Liner will download portfu on your system

curl -s https://raw.githubusercontent.com/SxNade/PortFU/main/portfu -o portfu && chmod +x portfu && ./portfu

PortFU can be harsh on some low-end CPU's in that case you are advised to increase the time Delay [Default is set to 3 seconds]

Also Note that PortFU is not IDS/IPS safe, it is meant to be used as a suplementary portscanner