OTP R5B & OTP R7B

[Mark Corkery]

Hi, 

	I've got two remote systems, one based on R5B and another based on R7B.
I want to tell which is which from a central R6B machine. How can I do
this (taking into account the fact that the R5B machine code cannot be
updated).

/Mark

P.S. is there a better way than erl -version???
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