AW: AW: how to copy a folder from preferences under lion?

Tiemo Hollmann TB toolbook at
Wed Aug 10 11:30:37 EDT 2011

Thanks Richard,
I think for my usage of offering a migration tool it's a bit to much. I
think I'll let die my old files where they are and let the user install them
fresh in the new location. If somebody complains about my dead files I'll
let him call apple.

> -----Ursprüngliche Nachricht-----
> Von: use-livecode-bounces at [mailto:use-livecode-
> bounces at] Im Auftrag von Richard Gaskin
> Gesendet: Mittwoch, 10. August 2011 16:04
> An: use-livecode at
> Betreff: Re: AW: how to copy a folder from preferences under lion?
> Tiemo Hollmann wrote:
>  >> Richard Gaskin wrote:
>  >> What's wrong with using the folder Apple recommends?:
>  >>
>  >>    specialFolderPath("preferences")
>  >
>  > I have some files which must be shared for all users (see my previous
>  > threads). That’s why I had those files in the past in /library
>  > /preferences/
>  > and now for Lion in /applications/myFolder/
>  > which works for fresh installations. Now I wanted to migrate my files
>  > for existing installations, who upgraded to Lion to the new location,
>  > but I don't get them off the old location.
> Page 27 of the Release Notes may be helpful here:
>     Elevated process support (4.5 – experimental)
>     Sometimes it is necessary to perform operations on the local
>     machine as an administrator, and a typical pattern for a GUI
>     application doing this is for it to prompt for authentication
>     at certain points.
>     Modern operating systems do not permit a process to elevate
>     itself, nor grant itself increased privilege. Instead, they
>     only allow a running process to launch another process with
>     increased privilege. Therefore, in order to support this, a
>     new form of the open process command has been introduced that
>     can launch a slave process with elevated permissions:
>      open elevated process process [ for [ text | binary ]
>          ( read | write | update | neither ) ]
>     This form operates identically to the normal version, except
>     that engine will ask the system to launch the given process
>     with admin/root privileges.
>     The standard way for a GUI application that needs to perform
>     privileged operations to be structured is to split the
>     application into two parts: a GUI front-end that interacts with
>     the user, and a command-line back-end that is run with elevated
>     permissions. These two parts can then talk to each other using
>     a standard master-slave approach, or some other form of IPC such
>     as sockets.
>     Important: This feature is currently experimental. This means
>     that it may not be complete, or may fail in some circumstances
>     that you would expect it to work. Please do not be afraid to try
>     it out as we need feedback to develop it further.
> For myself it seems like a lot of work to provide two standalones for
> one task; I'd probably opt for using the /Users/Shared folder instead.
> --
>   Richard Gaskin
>   Fourth World
>   LiveCode training and consulting:
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