Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am stuck to find what was the older/previous version of my AIX OS?

To find the current OS version we use :-

oslevel -s

what is the command to find the previous version from which it was upgraded?

Any help is appreciated.

I am stuck, could anybody tell some workaround, how to get the info of previous TL/SP installed?

share|improve this question

I don't believe there is any such command. There may be such information in the logs, but trolling through "alog -o -t boot" on one of our AIX machines, I don't see OS version info reported.

share|improve this answer
I am not a root user. If you could suggest something else, that would be better. – user101418 Nov 19 '11 at 7:01
If you're not the root user, you're on the wrong site. Please read the FAQ - this site is for systems admins. – mfinni Nov 19 '11 at 14:14
Pls suggest something meaningful so that the problem can be solved. I wrote it would be better. I can request the root to do the work but for that we should come up with solution. – user101418 Nov 19 '11 at 14:29
Another option would be to review your inventory and/or change control documentation to see what work has been done to this server at what times. – mfinni Nov 20 '11 at 1:21

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.