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Is there a way to fake out the AIX version on a P5?

We need to install outdated software. The install won't proceed because
the software "can't recognize the AIX version."

Can you fake out AIX version 5.2 to an earlier one?

TIA
Orin Rehorst

are we clairvoyant ?
Sw what kind of install ? Its an Install script ? or an RPM or LPP
package. A human in front sitting not knowing what to type ?

So please just try to be little more informational

tnx
Hajo

I'm guessing that the software you are trying to install is checking
for an older version of AIX and now since you upgraded you are trying
to get it installed on a version it does not expect to see. Odds are
that if you do get it installed, the compiled software will core dump
on you due to inconsistent library calls.

There are many ways that a software may check for a version of AIX. The
simpler methods are to issue "oslevel" or "uname" commands, while more
complicated installers may check the date or size of certain O/S files,
or consult the ODM. If you can figure out what the installation
software is expecting you could potentially trick it (example,
temporarily rename the oslevel command and create a script that spits
out 3.2.5.0 or whatever your older operating system the software was
expecting) but you could also cause some serious instability in your
system this way and I would not recommend it.

You may want to research restoring from a mksysb backup before you try
any changes to try and install that older software ;-)

"steven_nospam at Yahoo! Canada" <steven_nospam@yahoo.ca> writes:

> I'm guessing that the software you are trying to install is checking
> for an older version of AIX and now since you upgraded you are trying
> to get it installed on a version it does not expect to see. Odds are
> that if you do get it installed, the compiled software will core dump
> on you due to inconsistent library calls.

Actually, odds are that the software will work just fine -- most
executables compiled on e.g. AIX5.1 work fine on AIX5.3, and it
takes quite a bit of effort to write programs that will not work
on a newer OS.

> There are many ways that a software may check for a version of AIX. The
> simpler methods are to issue "oslevel" or "uname" commands, while more
> complicated installers may check the date or size of certain O/S files,
> or consult the ODM.

Checking date/size will break even with patch installation, and it
is very unlikely the installer does that.

If the installer is a compiled executable, it could be doing
uname(2), in which case OP will have really hard time bypassing
the check.

Cheers,
--
In order to understand recursion you must first understand recursion.
Remove /-nsp/ for email.

rehorst@poha.com wrote:
> Is there a way to fake out the AIX version on a P5?
>
> We need to install outdated software. The install won't proceed because
> the software "can't recognize the AIX version."
>
> Can you fake out AIX version 5.2 to an earlier one?

The install package is just a bundle, so you can do it manually.

That said, there is probably a reason the person who built the
package installed that prereq... and the odds are quite good that
you're wasting your time.

Paul Pluzhnikov wrote:
> "steven_nospam at Yahoo! Canada" <steven_nospam@yahoo.ca> writes:
>
>
>>I'm guessing that the software you are trying to install is checking
>>for an older version of AIX and now since you upgraded you are trying
>>to get it installed on a version it does not expect to see. Odds are
>>that if you do get it installed, the compiled software will core dump
>>on you due to inconsistent library calls.
>
>
> Actually, odds are that the software will work just fine

Actually, no. Re-read the OP. He wants to go downlevel...
not up.

> -- most
> executables compiled on e.g. AIX5.1 work fine on AIX5.3, and it
> takes quite a bit of effort to write programs that will not work
> on a newer OS.
>
>
>>There are many ways that a software may check for a version of AIX. The
>>simpler methods are to issue "oslevel" or "uname" commands, while more
>>complicated installers may check the date or size of certain O/S files,
>>or consult the ODM.
>
>
> Checking date/size will break even with patch installation, and it
> is very unlikely the installer does that.
>
> If the installer is a compiled executable, it could be doing
> uname(2), in which case OP will have really hard time bypassing
> the check.
>
> Cheers,

base60 <nobody@whitehouse.com> writes:

> Actually, no. Re-read the OP. He wants to go downlevel...
> not up.

The way I read the OP is:
- he is on AIX5.2,
- his software is too old and doesn't recognize 5.2 as a valid revision,
- he wants to *pretend* that his revision is *older* than 5.2,
so the software will install.
- once installed, he will keep running it on AIX5.2

So, no, I don't believe he wants to go "downlevel".

Cheers,
--
In order to understand recursion you must first understand recursion.
Remove /-nsp/ for email.

Some software install scripts have flags to ignore o/s levels i.e. for
Oracle

runinstaller -IgnoreSysPreReqs

Have you checked there isnt such a flag for your software ? what
software is it by the way, there may be a hack or a work around so why
dont you google for it


Rgds
Mark Taylor

Paul Pluzhnikov wrote:
> base60 <nobody@whitehouse.com> writes:
>
>
>>Actually, no. Re-read the OP. He wants to go downlevel...
>>not up.
>
>
> The way I read the OP is:
> - he is on AIX5.2,
> - his software is too old and doesn't recognize 5.2 as a valid revision,
> - he wants to *pretend* that his revision is *older* than 5.2,
> so the software will install.
> - once installed, he will keep running it on AIX5.2
>
> So, no, I don't believe he wants to go "downlevel".

After taking my own advice about re-reading a few times,
you may be correct :-)


>
> Cheers,