From owner-freebsd-hackers@FreeBSD.ORG  Mon Aug 21 15:05:35 2006
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Date: Mon, 21 Aug 2006 16:05:33 +0100
From: "mal content" <artifact.one@googlemail.com>
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Subject: Relative paths [was: Path transformation]
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Thanks to all who helped point me towards realpath().

I have another favour to ask: Is there a function that can
take two absolute paths and generate a relative path, from
source to destination?

/usr/bin/false  /bin

Becomes:

../../bin

/bin /usr/bin/false

Becomes:

../usr/bin/false

thanks,
MC