list all open ssh tunnels code example

Example: ssh list port forwards

% sudo lsof -i -n | egrep '\<ssh\>'
ssh  19749  user  3u  IPv4 148088244   TCP x.x.x.x:39689->y.y.y.y:22 (ESTABLISHED)
ssh  19749  user  4u  IPv6 148088282   TCP [::1]:9090 (LISTEN)
ssh  19749  user  5u  IPv4 148088283   TCP 127.0.0.1:9090 (LISTEN)