sudo apt-get install clamav

For automated use install the package clamav-daemon

sudo apt-get install clamav-daemon

After installing you may be asked to configure the antivirus like updates, I

recommend automatically since its updates are very small.

Scanning Using ClamAV:

Use the command clamscan

Let’s check out some examples

To check each file, displaying name of each file: clamscan –r /

To check all files,display only infected file and ring a bell if infected files are

found: clamscan -r –bell -i /

After scan is completed it generates a scan summary.

Updating virus definitions:

Use the command freshclam

Finally one more point, clamscan can inspect only those file for which the

user is authorized to read. For checking all files use sudo prefix.