quoting special characters in puppet.conf

[Amos Shapira]

Hello,

I'd like to pass the following flags to diff through puppet:

-urbB -I $Id -I $HeadURL -I $URL

But when I try to set diff_args in /etc/puppet/puppet.conf like this:

diff_args = -ubB -I \$Id -I \$HeadURL -I \$URL

Puppet tries to interpolate the $Id and fails.

How can I quote the '$' sign so puppet will pass it as-is to diff?

I'm using puppet 0.25.4 on CentOS 5.5 x64_86.

Thanks.

[Patrick]

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[Amos Shapira]

Patrick,

I see only a quote of my question in your reply.

Do you have an answer?

Thanks.

--Amos

[Tom Duckering]

I believe the escape character is simply \

I use it to escape quotes - \"

[Patrick]

Sorry. I must have pressed Send instead of Discard. I didn't actually have anything to say.

[Amos Shapira]

Hi Tom,

That's what I tried but it doesn't help.

e.g. here is what I tested again right now:

diff_args = -ubB -I \$HeadURL

and here are the errors that I get:

err: /File[/usr/lib64/nagios/plugins/check_state_file.pl]: Failed to
retrieve current state of resource: Could not find value for $HeadURL

Thanks,

--Amos

On Aug 25, 11:15 pm, Tom Duckering <tom.ducker...@gmail.com> wrote:
> I believe the escape character is simply \
>
> I use it to escape quotes - \"
>
> On 25 Aug 2010, at 12:35, Amos Shapira wrote:
>
> > Patrick,
>
> > I see only a quote of my question in your reply.
>
> > Do you have an answer?
>
> > Thanks.
>
> > --Amos
>
> > On Aug 25, 6:28 pm, Patrick <kc7...@gmail.com> wrote:
> >> On Aug 24, 2010, at 11:52 PM, Amos Shapira wrote:
>
> >>> Hello,
>
> >>> I'd like to pass the following flags to diff through puppet:
>
> >>> -urbB -I $Id -I $HeadURL -I $URL
>

> >>> But when I try to set diff_args in /etc/puppet/puppet.conflike this:

[Darren Chamberlain]

* Amos Shapira <amos.shapira at gmail.com> [2010/08/27 01:06]:

> e.g. here is what I tested again right now:
>
> diff_args = -ubB -I \$HeadURL
>
> and here are the errors that I get:
>
> err: /File[/usr/lib64/nagios/plugins/check_state_file.pl]: Failed to
> retrieve current state of resource: Could not find value for $HeadURL

In many config files, such as mutt's, you need to double all the
backslashes, to protect them from the dereferencing that happens
during parsing. So, in \\\$HeadURL, the first \ would escape the
second \, and the third \ would escape the $, so that what gets
passed through is \$HeadURL.

Thus, this is untested speculation, but it can't hurt to try:

diff_args = -ubB -I \\\$HeadURL

--
Darren Chamberlain <dar...@boston.com>

[Amos Shapira]

I tried that:

diff_args = -ubB -I \\\$HeadURL

and still get:

err: ...: Failed to retrieve current state of resource: Could not find
value for $HeadURL

Does anyone knows what kind of code parses this? Is it passed through
the shell? How many "levels of quoting" does it go through before
reaching "diff" and by which programs?

Thanks,

--Amos