[TriLUG] Tool for new build system

[Unix SA]

Hello,

Does anyone know any tool for doing autotesting ?  for example .. i have
install new OS RHEL 5.6 and did some cutomizations . now i am releasing
RHEL 5.9 and i want to do autotest for that customizations or whatever
things i want to test ....

or for example i missed something in RHEL 5.9 and later i realized and i
fixed it and write some autotest so confirm all works ...

does anyone using something like that ?

I know autotest for Linux Kernel testing ..but that looks very complicated
.. anyone knows anything similar or easier to use tool or suggestions ?

Regards,
DJ