Find process ID, using a port number in use

[Anil Sedha]

Hello,

I am trying to find the process ID number and user details which use a particular port number. I found the port number in use using netstat -an

Now, I am trying to find which process is using the port number.

Can someone kindly guide me on this.

Regards and thanks in advance.
I shall update the points once i get the correct answer to all.

Anil

[Christopher Caldwell · Accepted solution]

lsof is your huckleberry. It's available from the porting archive:

http://hpux.cs.utah.edu/

[James R. Ferguson]

Hi:

The best tool for this is 'lsof'. For example, to find the process using port 161, do:

# lsof -i tcp:161
# lsof -i udp:161

If you don't have installed (usually in /opt), download it from here:

http://gatekeep.cs.utah.edu/hppd/hpux/Sysadmin/lsof-4.64/

Regards!

...JRF...

[Sajid_1]

hello,

You can make use of 'lsof' utility for doing all these functions. Get it from here, it's free:
http://hpux.cs.utah.edu/hppd/hpux/Sysadmin/lsof-4.64/

[Jeff Schussele]

Hi Anil,

You'll have to use the lsof utility & the command would be, I believe:

lsof -i TCP:port#

Of course substitute UDP if it's a UDP port.

HTH,
Jeff

[Anil Sedha]

You guys gave me what i wanted.

Hope you are happy with your points. I appreciate the help you guys provide.

Regards,
Anil