[tex-live] How to overwrite mactex 2008 with mactex 2009?

[Maxwell, Adam R]

On 07/14/09 13:33, "Reinhard Kotucha" <reinhard.kotucha at web.de> wrote:

> On 14 July 2009 Herbert Schulz wrote:
> 
>> On Jul 14, 2009, at 5:24 AM, YANG weiwei wrote:
>> 
>>> I have downloaded mactex-2009 and installed it, but I also have
>>> mactex 2008 installed before, then, could anyone tell me how to
>>> erase mactex 2008? or How to delete all the files associated with
>>> mactex 2008?Did mactex 2009 overwrite the same-name files that both
>>> contained, like Ghost script?

[...]

It'll overwrite an existing ghostscript installed in /usr/local, but I think
you'd still be left with /usr/local/share/ghostscript/8.61 (or whatever the
previously installed version was).
 
> Does MacTeX has the same directory structure as TeX Live?

Yes.

> From what
> you say I deduce that this is true.  Then there is no need to remove
> anything unless disk space is lean.  Nothing will be overwritten and
> you can switch back to an older version at any time.

Right, and MacTeX includes a system preference pane so that this can be
accomplished by clicking a button.

> 
>> [...] simply throw the 2008 folder in the trash. This may leave a
>> few very small files around [...]
> 
> Any idea why this happens?  File permissions?

AFAIK the only bits left behind would be ghostscript installed in /usr/local
and various GUI applications, and fonts if installed for the OS to use.