linux - Test if a port on a remote system is reachable (without telnet) - Super User

linux - Test if a port on a remote system is reachable (without telnet) - Super User

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 20-30

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