Forum: Cfengine Help
Subject: Re: Questions about the reference manual
Author: mwlarsen
Link to topic: https://cfengine.com/forum/read.php?3,18107,18209#msg-18209
neilhwatson Wrote:
-------------------------------------------------------
> I don't see anything with a '->'.
There isn't anything with that symbol in my example, but the documentation has
it everywhere, as in:
access:
"/master/cfengine/inputs" -> { "update_policy", "other_promisee" },
>I'm getting the
> impression that you have no
> programming experience.
You are correct. I write simple scripts (emphasis on simple) in perl and bash
to automate some sysadmin tasks, but I have never been a programmer.
> If, as you say, you
> understood lines five and six then
> I think you already have a grasp of what '=>'
> means.
I understand what it means in those lines because of the context. ${d} is
clearly a reference to urecurse(d), and "exclude_dirs" followed by filesystem
paths is obvious. But I don't understand what it means in this context:
depth_search => urecurse("inf");
> It tells the left hand
> side of '=>' to use the right hand side values.
Except that:
body depth_search urecurse(d) {
depth => "${d}";
exclude_dirs => { "\.svn" };
}
looks like a block of code, not a value. I think the source of my confusion is
that I don't understand the relationship between the first reference to
depth_search/urecurse, and the second reference to them.
> > > Line 1 is from a promise. Parts of a promise
> > are
> > > comprised of external body parts.
> >
> > What promise is line 1 from? What are the
> > "external body parts" you're referring to?
>
> From the promise in your own example.
I guess I'll table this one.
> > > Line 3 started the body part of the
> > depth_search
> > > type specifically named urecurse. This name
> > could
> > > be anything.
> >
> > I'm not grasping what you mean by "depth_search
> > type specifically named urecurse". There are
> > different types of depth_search?
>
> To recrusively search down into a directory and
> all or some of its
> subdirectories.
Let me try again...
"depth_search type"
What does that mean? There are different types of depth_search?
I don't mean to be a pain. I'm really frustrated. I feel like I'm missing some
pre-requisite knowledge the authors of cfengine assume all sysadmins have.
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