kill all server 5000 mac

C++
#First run this, to get port information (with the port you want to kill)
sudo lsof -i :3000 

#Then run this, with <PID> replaced by the value in the column returned by previous command.
kill -9 <PID>sudo lsof -i :3000
sudo lsof -i tcp:3000 
kill -9 <PID>

Source

Also in C++: