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?

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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.

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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
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