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Full Discussion: How to find what process is using a port in AIX 5L and above.
Operating Systems AIX How to find what process is using a port in AIX 5L and above. Post 302423573 by kah00na on Friday 21st of May 2010 10:25:18 AM
Old 05-21-2010
lsof
In the AIX Toolbox for Linux, there is a program called "lsof" which makes finding this information even easier. It can be downloaded from IBM's website here:

IBM AIX Toolbox for Linux Applications - Alphabetical Listing

You can pass it a "-i" followed by a colon and port number and you'll be shown the PID of the process using that port number (use the "grep LISTEN" to get the listening port and not the established connections):

Code:
host:/:$ which lsof
/usr/sbin/lsof
host:/:$ lsof -i :22 | grep LISTEN
sshd     2293958 root    3u  IPv4 0xf100050000489bb0      0t0  TCP *:ssh (LISTEN)
host:/:$ ps -ef | grep 2293958
    root  2293958  2949244   0   May 04      -  0:08 /usr/sbin/sshd
    root  6553842  2293958   0 08:33:52      -  0:00 sshd: user1 [priv]
    root 12910638  4522154   2 09:23:02  pts/1  0:00 grep 2293958
host:/:$

Way easier to remember.
Last edited by kah00na; 05-21-2010 at 11:33 AM..
 

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LEARN ABOUT REDHAT

nfsd

rpc.nfsd(8)						      System Manager's Manual						       rpc.nfsd(8)

NAME

       rpc.nfsd - NFS server process

SYNOPSIS

       /usr/sbin/rpc.nfsd [-p port] nproc

DESCRIPTION

       The  rpc.nfsd program implements the user level part of the NFS service. The main functionality is handled by the nfsd.o kernel module; the
       user space program merely starts the specified number of kernel threads.

       The rpc.mountd server provides an ancially service needed to satisfy mount requests by NFS clients.

OPTIONS

       -p port
	      specify a diferent port to listen on for NFS requests. By default, rpc.nfsd will listen on port 2049.

       nproc  specify the number of NFS server threads. By default, just one thread is started. However, for optimum performance  several  threads
	      should be used. The actual figure depends on the number of and the work load created by the NFS clients, but a useful starting point
	      is 8 threads. Effects of modifying that number can be checked using the nfsstat(8) program.

SEE ALSO

       rpc.mountd(8), exportfs(8), rpc.rquotad(8), nfsstat(8).

AUTHOR

       Olaf Kirch, Bill Hawes, H. J. Lu, G. Allan Morris III, and a host of others.

								    31 May 1999 						       rpc.nfsd(8)
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