CF resize and save image

gistfile1.cfm

<cfdirectory action="list" directory="#expandPath('/imgs')#" name="imgs" filter="*.jpg" />

<cfoutput query="imgs">
    <cfimage source="#directory#/#name#" name="img" />
    <cfset ImageGrayscale(img) />
    <cfset imageScaleTofit(img,200,'') />
        <cfimage source="#img#" action="write" destination="#expandPath('/finalimages/')##listFirst(name,'_')#.jpg" overwrite="no" />
        <cfflush>
        #name# done <br/>
</cfoutput>
<br/>
all done