That's probably one of the best ways to do this. But...
You CAN use double quotes around a string. You will need to escape
characters that will otherwise be interpolated like double quotes and
dollar signs. I'm going off memory but I think `"awk '{print \$1_\$2}'"`
should interpolate to `awk '{print $1_$2}'` properly. This is often tedious
and may require some trial and error to ensure both the double quotes and
the system call that uses it don't interpolate too much but it can work.
On Wed, Mar 22, 2017 at 7:07 PM Peter Bukowinski <[email protected]> wrote:
> Hi Warron,
>
> I'd consider using an external, executable fact to avoid ruby altogether.
>
>
> https://docs.puppet.com/facter/3.6/custom_facts.html#executable-facts-----unix
>
> Basically, you can write a bash script (or use any language you want),
> drop it into '<MODULEPATH>/<MODULE>/facts.d/' on your puppet server,
> and it will be synced to all your nodes (assuming you use pluginsync).
>
> The only requirement for executable fact scripts is that they must
> return key/value pairs in the format 'key=value'. Multiple keys/values
> get their own line. In your case, you could do something like this:
>
> -----
> #!/bin/bash
>
> key="qty_monitors_total"
> value=$(your parsing command for /var/log/Xorg.0.log here)
>
> echo "${key}=${value}"
> -----
>
> Save the file as an executable script in the above mentioned path and
> it should be available on the next puppet run.
>
> On Wed, Mar 22, 2017 at 3:24 PM, warron.french <[email protected]>
> wrote:
> > Hello, I have finally learned how to write a Custom Fact; and duplicated
> the
> > syntax several times over inside the same .rb file.
> >
> > I am using syntax that looks like the following:
> >
> > Facter.add('qty_monitors_total') do
> > setcode do
> > Facter::Util::Resolution.exec('/bin/grep " connected"
> > /var/log/Xorg.0.log | cut -d\) -f2,3,4 | grep GPU |sort -u | wc -l')
> > end
> > end
> >
> > I don't know of any other way to do this yet; but that's not my concern
> yet.
> >
> > What I would like to know is how can I use an awk command within the
> > Facter::Util::Resolution.exec('.........') line.
> >
> > I have a need to essentially reproduce the line above but drop wc -l
> and
> > add awk '{ print $2"_"$3"_on_"$1$4 }'
> >
> > I need the awk command to pretty much look like this; the problem is awk
> > uses its own single quotes (') and it will break the ruby code.
> >
> > I am not a ruby developer; so if someone could either tell me:
> >
> > It's just not possible; or
> > do it this way
> >
> >
> > That would be greatly appreciated. Thank you,
> >
> > --------------------------
> > Warron French
> >
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> >
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> .
> > For more options, visit https://groups.google.com/d/optout.
>
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--
Rob Nelson
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