linux check if a port is open
sudo lsof -i -P -n | grep LISTENlinux test port
# Nice and verbose! From the man pages.
# Single port:
nc -zv 127.0.0.1 80
# Multiple ports:
nc -zv 127.0.0.1 22 80 8080
# Range of ports:
nc -zv 127.0.0.1 20-30Copyright © 2021 Codeinu
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