Install clamav-freshclam by entering the following commands in the terminal:
sudo apt update sudo apt install clamav-freshclam
anti-virus utility for Unix - virus database update utility
Clam AntiVirus is an anti-virus toolkit for Unix. The main purpose of this software is the integration with mail servers (attachment scanning). The package provides a flexible and scalable multi-threaded daemon in the clamav-daemon package, a command-line scanner in the clamav package, and a tool for automatic updating via the Internet in the clamav-freshclam package. The programs are based on libclamav, which can be used by other software. . This package contains the freshclam program and scripts to automate virus database updating. It relies on an Internet connection, but can be run in a variety of ways to compensate for intermittent connections.