Easy way to compute memory stats? (procfs?)

[sean-freebsd-hackers]

        Is there an easy way (from script ideally) to get the following
stats:

free physical mem (avail ram)
free swap
total avail mem

        any two of the three would be great.  If such a beast doesn't
exist, what are the easiest calls to use to get at them so I could
write some programs that would output this info.  -sc

-- 
Sean Chittenden                [EMAIL PROTECTED]

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