Are you wanting to scan for files before moving them to a windows partition? Or are you worried about spyware/adware infesting your Linux OS.
I personally only scan files before allowing them access to a windows partition or network, I currently have no need of virus/spyware/adware detection for my linux environment. Here is a great post about the subject
http://ubuntuforums.org/showthread.php?t=708380That said, you can use Wine or a Virtual Machine to scan for spyware/adware on linux partitions. Most of the good AV producers have linux native Antivirus/adware/spyware detectors/removers (usually free versions as well). Heres a nice list:
http://en.wikipedia.org/wiki/Linux_malwareI hope I've been of some help.
GL and HF