MacOS PortをListenしているプロセスを調べるコマンド
lsof -i:8080
http://stackoverflow.com/questions/4421633/who-is-listening-on-a-given-tcp-port-on-mac-os-x
ps aux | grep
実践
lsof -i:8080 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME com.apple 472 kubottiuser 12u IPv6 0x1cfb42a923304357 0t0 TCP localhost:50216->localhost:http-alt (ESTABLISHED) com.apple 472 kubottiuser 14u IPv6 0x1cfb42a93d8da057 0t0 TCP localhost:50213->localhost:http-alt (ESTABLISHED) com.apple 472 kubottiuser 19u IPv6 0x1cfb42a93d8da057 0t0 TCP localhost:50213->localhost:http-alt (ESTABLISHED) com.apple 472 kubottiuser 20u IPv6 0x1cfb42a923304357 0t0 TCP localhost:50216->localhost:http-alt (ESTABLISHED) node 25310 kubottiuser 25u IPv6 0x1cfb42a93d8d8257 0t0 TCP localhost:http-alt->localhost:50215 (ESTABLISHED) node 25310 kubottiuser 27u IPv6 0x1cfb42a93d8d6457 0t0 TCP localhost:http-alt->localhost:50213 (ESTABLISHED) node 25310 kubottiuser 30u IPv6 0x1cfb42a93d8d5557 0t0 TCP localhost:http-alt->localhost:50216 (ESTABLISHED) node 25310 kubottiuser 32u IPv6 0x1cfb42a93d8d9b57 0t0 TCP *:http-alt (LISTEN) com.apple 25339 kubottiuser 17u IPv6 0x1cfb42a93d8d5057 0t0 TCP localhost:50215->localhost:http-alt (ESTABLISHED) com.apple 25339 kubottiuser 18u IPv6 0x1cfb42a93d8d5057 0t0 TCP localhost:50215->localhost:http-alt (ESTABLISHED)
ps aux | grep 25310 kubottiuser 25310 0.1 1.1 3166708 185732 s001 S+ 10:56AM 0:05.86 gulp kubottiuser 25349 0.0 0.0 2463152 460 s000 U+ 10:57AM 0:00.00 grep 25310
8080を使っているのはgulpの開発用ウェブサーバー