--aix

$netstat -an|grep LISTEN|grep 7867

tcp4 0 0 *.7867 *.* LISTEN

$netstat -Aan|grep 7867

f1000e00029fe3b0 tcp4 0 0 *.7867 *.* LISTEN

$rmsock f1000e00029fe3b0 tcpcb

The socket 0x29fe008 is being held by proccess 2884424 (test).

$ps -ef|grep 2884424

admin 4128816 2491030 0 16:14:42 pts/6 0:00 grep 2884424

admin 2884424 2884008 0 15:31:15 pts/3 0:00 test

$

 

--linux

# netstat -apn|grep LISTEN|grep 4000

tcp 0 0 :::4000 :::* LISTEN 21864/node