Over the time I've worked in system administration, I've observed acommon pattern that I will summarize this way:

As your system count grows, you wind up automating the automation.

Here is the levels that I've seen people (myself included) go through:

• managing systems by hand, one by one.
• using tools that let you run a command on all of your systems orclasses of your systems.
• automating things for clusters, so that you don't have to explicitlyrun commands on

As a trap for the unwary, Python code objects have both a co_names and a co_varnames attribute. Since I just confused myself aboutwhich was what the other day , here is what the co_names one is.

Put simply, co_names is a tuple of names of globals and attributesthat are used by the function's code. For example, if you have ' a =self.bar() ' in the function, the ' bar ' will show up in co_

One of the things that people report (to put it politely) when theyswitch between a Debian-derived distribution and Fedora is that apt isfaster than yum . This is indeed the case, and it is always going to bethe case, because yum is simply doing far more work than apt is.

(Whether or not the speed difference matters in practice is anotherdebate. It doesn't bother me, but then I use fairly fast and beefymachines.)

As I understand it, the different amount