Answers for "how to check the ports running in linux"

linux how to see ports in use

# Any of the following
sudo lsof -i -P -n | grep LISTEN
sudo netstat -tulpn | grep LISTEN
sudo lsof -i:22 # see a specific port such as 22
sudo nmap -sTU -O IP-address-Here

linux how to see ports in use

sudo netstat -tulpn | grep LISTEN

sudo lsof -i:22 # see a specific port such as 22

list of running ports linux

# it list the all running ports with process id.
$ netstat -ltnp