Running trid (or any command) on thousands of files

find |grep -e '.chk$' | lua -e "while true do str='' for i=1,50 do line=io.read('*l') if not line then break end line=string.sub(line,3) str=str..' '..line end if str=='' then break end os.execute('trid '..str..' -ae') end"