On Mar 5, 2010, at 8:46 AM, Allan Marcus wrote:
> The method you suggest is how we were first going to do a "one time script",
> but then we saw the "creates" parameter.
>
> What is the Creates parameter for then? Is it just redundant to [unless =>
> "test -e MYFILE"]
>
> ---
>
Mostly, it's just a nicer syntax. Also, make sure that the command won't hose
you computer if run twice. It's always possible that the puppet run will stop
before the file is created.
>
>
>
> On Mar 4, 2010, at 2:36 PM, Steven VanDevender wrote:
>
>> Pete Emerson writes:
>>> If you don't care about the contents of the file, just whether it's
>>> there or not:
>>>
>>> unless => "/usr/bin/file MYFILE"
>>>
>>> or
>>>
>>> unless => "/usr/bin/stat MYFILE"
>>>
>>> or
>>>
>>> unless => "/bin/ls MYFILE"
>>>
>>> should all be pretty lightweight
>>
>> Actually, if all "unless" looks at is the return code of the command I
>> would probably go with
>>
>> unless => "test -e MYFILE"
>>
>> If you use "test" you could also do more sophisticated things like
>> require the presence of a real file with "-f" and combine other tests for
>> permissions or ownership.
>>
>>> On Thu, Mar 4, 2010 at 12:06 PM, Patrick <kc7...@gmail.com> wrote:
>>>>
>>>> On Mar 4, 2010, at 7:29 AM, Allan Marcus wrote:
>>>>
>>>>> A file that this command creates. If this
>>>>> parameter is provided, then the command will only be run
>>>>> if the specified file does not exist::
>>>>>
>>>>> exec { \"tar xf /my/tar/file.tar\":
>>>>> cwd => \"/var/tmp\",
>>>>> creates => \"/var/tmp/myfile\",
>>>>> path => [\"/usr/bin\", \"/usr/sbin\"]
>>>>> }
>>>>>
>>>>>
>>>>> Is there a way to set the content of this file (/var/tmp/myfile) using
>>>>> some additional parameter in the above syntax?
>>>>
>>>> This isn't the "right" way to do it, and you may have performance issues
>>>> depending on the size of the file, but you can always combine grep with
>>>> unless.
>>>>
>>>> If you want to re-extract the file if the file doesn't contain
>>>> "testString" this should work.
>>>>
>>>> exec { "tar xf /my/tar/file.tar":
>>>> cwd => "/var/tmp",
>>>> creates => "/var/tmp/myfile",
>>>> path => ["/usr/bin", "/usr/sbin"],
>>>> unless => "grep testString myfile",
>>>> }
>>>>
>>>>
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>>>
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