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Posted by djc on September 1, 2006, 4:13 pm
Please log in for more thread options Thanks again Steve. I do appreciate your input. This is one of those things
where I know I could take a specific situation and figure it out but I was
looking for an easy 'this is how it is all the time' type of thing to just
remember. I know thats often just not possible. In my experience thus far, I
rarely have to use any of the special permissions. However, I'm brushing up
my knowledge to prepare for upgrading my certifications.
thanks again.
> About all I have ever seen on that subject is what you have shown. My
> advice is if you have a need to fine tune a user's permissions is to test
> how those permissions work with the application and the data files for it.
> To me what it seems to indicate for example is if you have a text file the
> append data would allow you to add more text to the already existing text
> while write data would allow you to edit the whole document. However in
> real use it may not be that simple. Word for instance deletes the old file
> and writes the new file from the temporary file you are working on when
> you edit a document which also means the user needs delete permissions for
> the document he is editing.
>
> Steve
>
>
>> what the difference, with respect to files, between these two special
>> permissions:
>>
>> create files / write data
>> create folders / append data
>>
>> the 2nd part of each of those refer to files (write and append) and here
>> are descriptions I've read:
>>
>> 'write data': allows or denies user to modify or overwrite existing data
>> in a file
>> 'append data': allows or denies the user the right to add data to the end
>> of files. This does not include making changes to any existing data
>> within a file.
>>
>> taking a simple text file for example:
>> 1) 'write data': if file is 500KB does this mean you could modify or
>> overwrite data in it as long as the file remains 500KB or smaller? In
>> other words once your 'modifications' grow the file to over 500KB the end
>> of the file changes and it becomes an 'append', which means you need the
>> 'append data' permission as well????
>>
>> 2) maybe my visualization of actually opening up the file in notepad.exe
>> and editing is not a good way to go? Maybe these permissions apply at a
>> lower level? to clarify what I mean, lets say the functions the user
>> performs via notepad.exe gui are the top layer, the layer I'm visualizing
>> when trying to make sense of these 2 permissions. The layer below this
>> being notepad.exe's actual code (outside the control of the user/gui) and
>> *how* it opens the file... for example, if I remember correctly from some
>> older programming experience, when actually coding a program that opens a
>> file you specify the 'mode' you want to open it in.. like read only,
>> append mode, etc... the mode would dictate what you could do with the
>> file. Is possibly that open 'mode' that these permissions are refering
>> to? I'm probably reading way to far into this.. plus unless you have done
>> some programming like this it won't make any sense to you.
>>
>> any input on this would be appreciated. thanks.
>>
>
>
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