set mRes to retMemoryUsage() of me
–> {usedMem:7891, wiredMem:2220, unusedMem:293}

on retMemoryUsage()
　　set memRes to do shell script "top -l 1 | head -10 | grep ’PhysMem’"
　　set aRes to (parseStrFromTo(memRes, " ", "M") of me)
　　
　　set bList to {}
　　repeat with i in aRes
　　　　set mRes to returnNumberOnly(i) of me
　　　　set the end of bList to mRes
　　end repeat
　　
　　set usedNum to contents of first item of bList
　　set wiredNum to contents of second item of bList
　　set unusedNum to contents of third item of bList
　　return {usedMem:usedNum as integer, wiredMem:wiredNum as integer, unusedMem:unusedNum as integer}
end retMemoryUsage

on parseStrFromTo(aParamStr, fromStr, toStr)
　　set theScanner to current application’s NSScanner’s scannerWithString:aParamStr
　　set anArray to current application’s NSMutableArray’s array()
　　
　　repeat until (theScanner’s isAtEnd as boolean)
　　　　— terminate check, return the result (aDict) to caller
　　　　set {theResult, theKey} to theScanner’s scanUpToString:fromStr intoString:(reference)
　　　　
　　　　— skip over separator
　　　　theScanner’s scanString:fromStr intoString:(missing value)
　　　　set {theResult, theValue} to theScanner’s scanUpToString:toStr intoString:(reference)
　　　　if theValue is missing value then set theValue to "" –>追加
　　　　
　　　　— skip over separator
　　　　theScanner’s scanString:toStr intoString:(missing value)
　　　　
　　　　anArray’s addObject:theValue
　　end repeat
　　
　　return anArray as list
end parseStrFromTo

on returnNumberOnly(aStr)
　　set anNSString to current application’s NSString’s stringWithString:aStr
　　set anNSString to anNSString’s stringByReplacingOccurrencesOfString:"[^0-9]" withString:"" options:(current application’s NSRegularExpressionSearch) range:{0, anNSString’s |length|()}
　　return anNSString as text
end returnNumberOnly