I installed ClamAV via Terminal (Ctrl+Alt+T) with:
sudo apt-get install clamav
but how can I scan for viruses?
At first you have to update the virus definitions with:
Then you can scan for viruses.
Graphical User Interface: ClamTk
ClamTk is a frontend for ClamAV. You can install it via Terminal with:
There is also a PPA with the latest version:
Scan Menu: Here you can choose a file, folder or a device for scanning
Help Menu: Here you can check for updates.