Install ClamAV Antivirus on CentOS /RHEL
What is ClamAV ?
ClamAV is an open source (GPL) antivirus engine designed for detecting Trojans, viruses, malware and other malicious threats on Linux. In this article, we will only be configuring ClamAV to run scheduled/on-demand scans; not resident scans.
Before we begin installation of ClamAV, we need to install and enable EPEL (Extra Packages for Enterprise Linux) repository.
Steps to Install ClamAV Antivirus on CentOS
You can directly download the latest Source form the official site and compile and install it.
Step 1. Install EPEL Repository.
CentOS / RHEL 64bit
rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
CentOS / RHEL 32bit
rpm -Uvh http://mirror.overthewire.com.au/pub/epel/6/i386/epel-release-6-8.noarch.rpm
Step 2. Install required ClamAV packages.
yum -y install clamav clamd
After completion of installation, Start the clamd service and set it to auto-start.
/etc/init.d/clamd on chkconfig clamd on /etc/init.d/clamd start
Step 3. Update ClamAV’s signatures
/usr/bin/freshclam
Note: ClamAV will update automatically, as part of /etc/cron.daily/freshclam.
A. Daily Scan Scheduling
Create a new cron file in /etc/cron.daily/ directory. If you want to run scan weekly, then file location will be /etc/cron.weekly/
vim /etc/cron.daily/clamav_scan
Add following piece of code into clamav_scan file.
#!/bin/bash SCAN_DIR="/home" LOG_FILE="/var/log/clamav/weeklyscan.log" /usr/bin/clamscan -i -r $SCAN_DIR >> $LOG_FILE
Exit vim editor and give this script executable permissions.
chmod +x /etc/cron.daily/clamav_scan
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