Port Status

[William Richard]

How do you find the status of a port on an HP 9000 b.10.20 U ?

Such as port.status port 184

Any input would be greatly appreciated

Regards,
Will

[Steve Steel]

Hi


try netstat -a


Steve Steel

[Kaare Andersen]

Hi,

my suggestion try:

netstat -a|grep 184

because the list from 'netstat -a' can be pretty long.

Best regards,
Kan

[U.SivaKumar_2]

Hi,

Port numbers are substituted with service names from /etc/services when you give netstat -a command. Therefore grep 184 will not work.

#netstat -an | grep 184

Will give the proper output

regards,

U.SivaKumar

[Ralph Grothe]

Hi Will,

like the others already have replied, netstat is the first tool of choice.

Just some minute supplement,
you can further narrow the dump by specifying if the local or remote port is meant you are interested in.

If it is a local server then you'd go for the 4th column

e.g.

netstat -an|awk '$4~/\.184$/'

or a remote listening socket

netstat -an|awk '$5~/\.184$/'

If you are only interested in internet sockets then you could narrow the dump by further supplying "-f inet" to netstat.

The sockets' states are displayed in the last column.

Apart from the ubiquitious netstat command the lsof tool has much more to offer, but is not shipped per default with HP-UX

If you compiled lsof from the source yourself or got hold of a binary you could do somethink like

lsof -i tcp:184

This will also list you the processes which use these sockets.

lsof has a myriad of options to show you far more than you ever dared to ask for.
Read the manpage of lsof

[Michael Steele_2]

"...netstat -an..." is useful to a degree but as the above posting stated you get more with "...lsof..."

All sockets or ports are open files. This makes it a candidate for the "..list open files..." command, lsof. Use:

lsof -U port