[fpc-pascal] Get user ID for name on Linux

[Tobias Giesen]

Hello,

I would like to get the user ID for a Linux user name.

Unfortunately Libc and UnixUtils don't seem to be available in 64-bit, so I can't call the
functions getpwnam or GetUserId. Is there a replacement? Or could I define and 
import the function myself? 

Thanks for any help!

Cheers,
Tobias