How to find out, if a prefix is 32 bit or 64 bit?

[sibare]

Hello

I have already searched in man page. But I did not find anything.
When I have a prefix: How can I the check, if it is a 32 bit prefix or a 64 bit prefix? Is there any command?

Thank you.

[dimesio]

Look for a /windows/syswow64 directory in the wineprefix. If it exists, the wineprefix is 64 bit; if it doesn't, it's 32 bit.

[sibare]

Thank you.

[spoon0042]

Or 'head -4 $WINEPREFIX/system.reg' will show either #arch=win32 or win64.

[sibare]

Was successful. Thank you @spoon0042.