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Date:      Sun, 13 Jan 2008 23:57:55 +0100 (CET)
From:      Christian Baer <>
Subject:   Changing the output of uname -m or -p
Message-ID:  <fme51j$t4q$>

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Hello Folks!

This may be a bit of a hacker's question, but I'll just go for it in here
- at least for starters.

I want to play a prank on a friend of mine. He does a csup at least once a
day and also makes a new world at least once a day. He is pretty nutty
about that which is ok for some -CURRENT system, but he also does that on
production systems.

Now I don't want to judge him about that, but he is a bit sensitive about
the output of uname. The version is very important to him. :-)

The prank I want to pull is to somehow change the output of uname -m to
read something different. The best thing would be to change that to
something ancient like C-64, i286, i8086. Or, if only plattforms that
FreeBSD supports are allowed, then mips, alpha or sparc64 on an i386. That
should keep him thinking for a while. :-)

I don't want to do any damage, so I just want to screw up the output of
uname and the system should work normally apart from that. I realise that
I may have to change some of the OS's code and that's not a problem. I
just don't know where to look for this kind of thing and I don't really
want to do too much reading just for a little prank.

This guy is a really good friend of mine but sometimes get up my neck
because I am much more conservative about updating my production systems.
As you can see on this machine, I go along the lines of RELENG_6_2 which
he can't understand. This should buy me a little peace and quite for a
week or two. Getting access to his machines is no problem as I am often at
his place.

Can this even be done and if so how?


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