[GRASS-windows] native grass63RC4 and MSYS shell

[Mirko Baruffini]

Hallo everybody!
I' m using wingrass grass63RC4. The use is ok, but, when I launch 
grass63.bat, it does not load the shell msys (I have uncommented and 
adapted some of the environment variables in grass/bin/grass63.bat).

So i decided to launch a script with native wingrass launching grass 
from within the msys shell.
When I type /c/grass/bin/grass63 it does not load grass. On the sceen I 
can read:

mirko.baruffini a ISTPC29 /
$ /c/grass63RC4/bin/grass63
/c/grass63RC4/grass-6.3.0RC4/etc/Init.sh: uname: command not found
/c/grass63RC4/grass-6.3.0RC4/etc/Init.sh: uname: command not found
/c/grass63RC4/grass-6.3.0RC4/etc/Init.sh: mkdir: command not found
Cannot create temporary directory! Exiting.

But the command uname exists:

mirko.baruffini a ISTPC29 /
$ uname
MINGW32_NT-5.1

What could  I do?
Thank you

Mirko