Why present different size and md5 hash between the compiled code and original binary ?

[Jerry]

Hi~ All

This is my first time to post question here, and also
I am a newbie on FreeBSD. A confusing thing I discover
is: Why the binary code I compiled(for example,telnet
command)compare with the original one is diffirent,
either size or md5 hash , What's going on? Are the
source files differ from the FreeBSD's binary, or
something else ?

Deeply appreciate your reply, thanks ~

Jerry Chang

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