How can I kill TCP port 16969 in Bash?

I think that:

lsof -i tcp:22 | grep LISTEN | awk '{print $2}' | xargs kill

Should do the trick.

To double check what commands it wants to run before letting it loose add an echo before the kill like this:

lsof -i tcp:22 | grep LISTEN | awk '{print $2}' | xargs echo kill

It'll then list the PIDs that it would ordinarily kill

fuser -k 16969/tcp

can free that port. This is a useful command that can be used to close ports, whichever it is.

Have you tried using tcpkill?

example:

tcpkill -i eth0 port 21

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