How can I find the port with reference to PID which is running on the server.

[bullz]

Crew,

How can I find the port with reference to PID which is running on the server.
For example, assume PID is 1785

And I want to know which port number is mapped for PID 1785

root@chiti # ps -ef | grep ssh
root 1785 1 0 14:23:35 ? 0:00 /usr/lib/ssh/sshd

[Goran Koruga]

Hello.

lsof -p 1785

netstat -nap | grep 1785

Regards,
Goran

[bullz]

thanx...

i got it with netstat -nap

but, how can figure out from command lsof?
can u explain the output of lsof which mentioned below.

root 9428 1 0 Oct22 ? 00:00:01 /usr/sbin/sshd

# lsof -p 9428
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
sshd 9428 root cwd DIR 104,5 4096 2 /
sshd 9428 root rtd DIR 104,5 4096 2 /
sshd 9428 root txt REG 104,2 409024 598371 /usr/sbin/sshd
sshd 9428 root mem REG 104,5 58683 /lib/libpam.so.0.81.5 (path inode=61307)
sshd 9428 root DEL REG 104,5 58584 /lib/libcrypto.so.0.9.8e.#prelink#.GvMDrd
sshd 9428 root mem REG 104,2 538362 /usr/lib/libnssutil3.so (path inode=543552)
sshd 9428 root mem REG 104,5 58681 /lib/libaudit.so.0.0.0 (path inode=61306)
sshd 9428 root mem REG 104,5 58573 /lib/libcrypt-2.5.so (path inode=58545)
sshd 9428 root mem REG 104,5 58583 /lib/libcom_err.so.2.1 (path inode=61303)
sshd 9428 root mem REG 104,2 538372 /usr/lib/libnspr4.so (path inode=543059)
sshd 9428 root DEL REG 104,2 543629 /usr/lib/libkrb5support.so.0.1.#prelink#.wmZE1l
sshd 9428 root mem REG 104,5 59434 /lib/libnsl-2.5.so (path inode=58529)
sshd 9428 root mem REG 104,5 50848 60754 /lib/libnss_files-2.5.so
sshd 9428 root mem REG 104,5 58576 /lib/libselinux.so.1 (path inode=59371)
sshd 9428 root mem REG 104,5 58543 /lib/libc-2.5.so (path inode=58521)
sshd 9428 root mem REG 104,2 543488 /usr/lib/libplc4.so (path inode=543458)
sshd 9428 root mem REG 104,2 543570 /usr/lib/libplds4.so (path inode=543542)
sshd 9428 root mem REG 104,5 58763 /lib/libpthread-2.5.so (path inode=58549)
sshd 9428 root mem REG 104,2 543683 /usr/lib/libz.so.1.2.3 (path inode=543571)
sshd 9428 root mem REG 104,5 59428 /lib/libdl-2.5.so (path inode=58531)
sshd 9428 root mem REG 104,5 58505 /lib/ld-2.5.so (path inode=58514)
sshd 9428 root mem REG 104,2 543689 /usr/lib/libk5crypto.so.3.1 (path inode=543687)
sshd 9428 root mem REG 104,5 59438 /lib/libutil-2.5.so (path inode=58547)
sshd 9428 root mem REG 104,5 58571 /lib/libwrap.so.0.7.6 (path inode=58512)
sshd 9428 root mem REG 104,2 543690 /usr/lib/libkrb5.so.3.3 (path inode=543767)
sshd 9428 root mem REG 104,5 61295 /lib/libresolv-2.5.so (path inode=58527)
sshd 9428 root mem REG 104,2 543611 /usr/lib/libnss3.so (path inode=543566)
sshd 9428 root mem REG 104,5 58570 /lib/libsepol.so.1 (path inode=58694)
sshd 9428 root DEL REG 104,2 543691 /usr/lib/libgssapi_krb5.so.2.2.#prelink#.A6rImB
sshd 9428 root mem REG 104,5 58577 /lib/libkeyutils-1.2.so (path inode=61302)
sshd 9428 root DEL REG 104,2 542443 /usr/lib/libfipscheck.so.1.1.0.#prelink#.daRjWZ
sshd 9428 root 0u CHR 1,3 1513 /dev/null
sshd 9428 root 1u CHR 1,3 1513 /dev/null
sshd 9428 root 2u CHR 1,3 1513 /dev/null
sshd 9428 root 3u IPv4 176345223 TCP *:ssh (LISTEN)


* I will assign the points in the end.

[Patrick Wallek]

The key is this line:

>>sshd 9428 root 3u IPv4 176345223 TCP *:ssh (LISTEN)

This is listening on the 'ssh' port. By default this is port 22, as defined in /etc/services.

[Patrick Wallek]

If you want to prevent lsof from converting port 22 to 'ssh' in its output you can do the following:

lsof -p 9428 -P

Then your line with the port info would look like:

sshd 9428 root 3u IPv4 176345223 TCP *:22 (LISTEN)

[bullz]

Thanx buddies......