/Shell/Bash/Linux check if a port is open

Linux check if a port is open

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

Check what ports are open linux

## if you use linux
sudo ss -tulw

Linux check if a port is open

sudo lsof -i -P -n | grep LISTEN

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