[U-Boot] Copy environment variables to another board

[Giuseppe Modugno]

I'm sorry if my question was already asked, but I didn't find an 
answer in the manual/FAQs/mailing list archive.

I have a board running U-Boot/Linux. U-Boot program, two U-Boot 
environments, Linux kernel and root filesystem for Linux are stored 
in a NOR Flash.

I finished my developing process and now I want to copy the entire U-
Boot environment to a new board. Of course, I don't want to manually 
copy all the variables in the environment.

Is there a simple way to dump the full environment in a file and copy 
it in the new board?

Thanks for your help.