exec's onlyif parameter fails for a bash one-liner - Puppet Users

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Message from discussion exec's onlyif parameter fails for a bash one-liner
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Date: Wed, 25 Apr 2012 18:03:39 +0200
Message-ID: <CAJrhObf6Sd82Wue1aPVFWiJ8+C8qCu47EQq5FfPTNn5FgFV...@mail.gmail.com>
Subject: Re: [Puppet Users] exec's onlyif parameter fails for a bash one-liner
From: Florian Koch <florian.koch1...@googlemail.com>
To: puppet-users@googlegroups.com
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Hi,

you need to add provider => shell to your exec to get the subshell working

regards Florian

On Wed, Apr 25, 2012 at 6:01 PM, Shantanu <knowshant...@gmail.com> wrote:

>
> I would like to 'exec' an installation script 'onlyif' an installation
> directory is empty. I tried using following bash one-liner however it
> didn't work:
> <code>
>  exec{$one_install_script:
>    require => File[$one_install_script],
>    onlyif => "[ \"$(/bin/ls -A  $one_location)\" ] && exit 1 || exit
> 0"
>  }
>
> </code>
>
> It failed with following error:
>
> <error>
> err: Failed to apply catalog: Parameter onlyif failed: '[ "$(/bin/ls -
> A  /srv/cloud/one)" ] && exit 1 || exit 0' is not qualified and no
> path was specified. Please qualify the command or specify a path.
> </error>
>
> A bash script with above one-liner worked fine though.
> <code>
>  exec{$one_install_script:
>    require => File[$one_install_script],
>    onlyif  => "/tmp/is-dir-empty.sh $one_location"
> </code>
>
> The bash script approach works fine for me. However I am not sure what
> is wrong with the one-liner command. Is $(cmd) command substitution or
> built-in function 'exit' a problem?  Any pointers will be really
> helpful.
>
> --
> Thanks,
> Shantanu
>
> --
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<div class=3D"gmail_extra">Hi,<br><br>you need to add provider =3D&gt; shel=
l to your exec to get the subshell working<br><br>regards Florian<br><br><d=
iv class=3D"gmail_quote">On Wed, Apr 25, 2012 at 6:01 PM, Shantanu <span di=
r=3D"ltr">&lt;<a href=3D"mailto:knowshant...@gmail.com" target=3D"_blank">k=
nowshant...@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><br>
I would like to &#39;exec&#39; an installation script &#39;onlyif&#39; an i=
nstallation<br>
directory is empty. I tried using following bash one-liner however it<br>
didn&#39;t work:<br>
&lt;code&gt;<br>
 =A0exec{$one_install_script:<br>
 =A0 =A0require =3D&gt; File[$one_install_script],<br>
 =A0 =A0onlyif =3D&gt; &quot;[ \&quot;$(/bin/ls -A =A0$one_location)\&quot;=
 ] &amp;&amp; exit 1 || exit<br>
0&quot;<br>
 =A0}<br>
<br>
&lt;/code&gt;<br>
<br>
It failed with following error:<br>
<br>
&lt;error&gt;<br>
err: Failed to apply catalog: Parameter onlyif failed: &#39;[ &quot;$(/bin/=
ls -<br>
A =A0/srv/cloud/one)&quot; ] &amp;&amp; exit 1 || exit 0&#39; is not qualif=
ied and no<br>
path was specified. Please qualify the command or specify a path.<br>
&lt;/error&gt;<br>
<br>
A bash script with above one-liner worked fine though.<br>
&lt;code&gt;<br>
 =A0exec{$one_install_script:<br>
 =A0 =A0require =3D&gt; File[$one_install_script],<br>
 =A0 =A0onlyif =A0=3D&gt; &quot;/tmp/is-dir-empty.sh $one_location&quot;<br=
>
&lt;/code&gt;<br>
<br>
The bash script approach works fine for me. However I am not sure what<br>
is wrong with the one-liner command. Is $(cmd) command substitution or<br>
built-in function &#39;exit&#39; a problem? =A0Any pointers will be really<=
br>
helpful.<br>
<br>
--<br>
Thanks,<br>
Shantanu<br>
<span class=3D"HOEnZb"><font color=3D"#888888"><br>
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</font></span></blockquote></div><br></div>

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