I test sophos,it can have the result by such format: <resultText><![CDATA[>>> Virus .* found]]></resultText>

savscan was applied. >>> Virus 'Troj/DocDl-TRH' found in file /tmp/emlF303338649421064410.tmp

But main problem is,the sophos takes several seconds to load database when using command line,someting muti thead will cause CPU take up 100%

Avast can have the scan reuslt within 1-2 seconds,very good speed.