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.