Install and configure ClamAV for Ubuntu

clamav.sh

# Install ClamAV
sudo apt install clamav clamav-daemon moreutils
 
# Set reasonable timeouts for the virus database download
sudo sed -i 's/ConnectTimeout .*/ConnectTimeout 300/' /etc/clamav/freshclam.conf
sudo sed -i 's/ReceiveTimeout .*/ReceiveTimeout 300/' /etc/clamav/freshclam.conf
 
# Restart FreshClam
sudo systemctl restart clamav-freshclam
 
# Schedule a daily scan
cat << EOF > /tmp/clamav
$(which clamscan) --infected --remove --recursive /home /etc /opt /bin /usr /media /boot /lib /lib64 /root /sbin /snap /sys /tmp /var | ts '[%Y-%m-%d %H:%M:%S]' >> /var/log/clamav/clamscan.log 2>&1
EOF
chmod +x /tmp/clamav && sudo mv /tmp/clamav /etc/cron.daily/clamav
 
# Run your first scan (this will take a while)
sudo /etc/cron.daily/clamav