UNIX for Dummies Questions & Answers

I am trying to find a way to discover which ports are in use on a UNIX system. I cannot install lsof on it, and it looks like the telnet option is disabled.

Try this

Code:

$netstat -pnae

the -p option will only properly display the prom using the port if you are root.

all open ports...

Code:

netstat -tulpn

I get these error messages:

EZZ2381I Incorrect option argument ulpn


EZZ2377I Could not establish affinity with NAE (138/11B3005A) - can not provide the requested o
ption information


I am not the sys admin.

What I am trying to do is find an open port for my program to use - if I do

netstat -o

would the list I get be comprehensive enough or could I assign my program a port someone else is using?

Please state the exact version if unix and the flavour of shell. What programming language are you using?

Looks like it's z/OS, not exactly what I would even remotely call a version of Unix ...

I didn't realize the z/OS version of UNIX was so different from other versions. I can run most shell cmds and have written shell scripts using KORN shell cmds. Should I find a forum specializing in z/OS shell?