y@y:~$ lsof | grep 35729 grunt 18194 y 13u IPv6 117971 0t0 TCP *:35729 (LISTEN) Optimizin 18194 18195 y 13u IPv6 117971 0t0 TCP *:35729 (LISTEN) v8:Sweepe 18194 18196 y 13u IPv6 117971 0t0 TCP *:35729 (LISTEN) v8:Sweepe 18194 18197 y 13u IPv6 117971 0t0 TCP *:35729 (LISTEN) v8:Sweepe 18194 18198 y 13u IPv6 117971 0t0 TCP *:35729 (LISTEN) grunt 18194 18295 y 13u IPv6 117971 0t0 TCP *:35729 (LISTEN) grunt 18194 18296 y 13u IPv6 117971 0t0 TCP *:35729 (LISTEN) grunt 18194 18297 y 13u IPv6 117971 0t0 TCP *:35729 (LISTEN) grunt 18194 18298 y 13u IPv6 117971 0t0 TCP *:35729 (LISTEN) y@y:~$ ps -ef | grep grunt y 8705 8501 0 17:54 pts/27 00:00:00 grep --color=auto grunt y 18194 4497 3 08:57 pts/11 00:20:06 grunt y@y:~$ kill -9 18194 y@y:~$ ps -ef | grep grunt y 8715 8501 0 17:54 pts/27 00:00:00 grep --color=auto grunt y@y:~$ lsof | grep 35729 y@y:~$
grunt serve Fatal error: Port 35729 is already in use by another process.
原文：http://www.cnblogs.com/yshyee/p/4586639.html