I need to find out what ports are attached to which processes on a Unix machine (HP Itanium). Unfortunately, lsof is not installed and I have no way of installing it.
Does anyone know an alternative method? A fairly lengthy Googling session hasn't turned up anything.
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hp-ux
Assuming this is HP-UX? What about the Ptools - do you have those installed? If so you can use "pfiles" to find the ports in use by the application:
pfiles prints information about all open file descriptors of a process. If file descriptor corresponds to a file, then pfiles prints the fstat(2) and fcntl(2) information.
If the file descriptor corresponds to a socket, then pfiles prints socket related info, such as the socket type, socket family, and protocol family.
In the case of AF_INET and AF_INET6 family of sockets, information about the peer host is also printed.
for f in $(ps -ex | awk '{print $1}'); do echo $f; pfiles $f | grep PORTNUM; done
switch PORTNUM for the port number. :) may be child pid, but gets you close enough to identify the problem app.
Which process uses port in unix;
root> netstat -Aan | grep 3872
output> f1000e000bb5c3b8 tcp 0 0 *.3872 . LISTEN
output> The socket 0xf1000e000bb5c008 is being held by proccess 13959354 (java).
netstat -l (assuming it comes with that version of UNIX)
If you want to know all listening ports along with its details: local address, foreign address and state as well as Process ID (PID). You can use following command for it in linux.
netstat -tulpn
Try pfiles PID to show all open files for a process.
netstat -pln
EDIT: linux only, on other UNIXes netstat may not support all these options.
Given (almost) everything on unix is a file, and lsof lists open files...
Linux : netstat -putan or lsof | grep TCP
OSX : lsof | grep TCP
Other Unixen : lsof way...
I use this command:
netstat -tulpn | grep LISTEN
You can have a clean output that shows process id and ports that's listening on
netstat -ln | awk '/^(tcp|udp)/ { split($4, a, /:/); print $1, a[2]}' | sort -u
gives you the active tcp/udp ports. Then you can use the ports with fuser -n tcp or fuser -n udp, as root, and supposing that fuser is GNU fuser or has similar options.
If you need more help, let me know.
Source: Stackoverflow.com