Clamav daily scan

clamscan_daily.sh

#!/usr/bin/env bash
# Author:   M. Dutt (hello@mditech.net)
# Date:     19/11/2023
# Purpose:  Clamav daily scan.
#
# chmod +x /path/to/script/clamscan_daily.sh
#
# 01 * * * * /path/to/script/clamscan_daily.sh
#

SUBJECT="`hostname` PASSED DAILY SCAN"
EMAIL="email@example.com"
LOG=/var/log/clamav/clamav.log
TMP_LOG=/tmp/clam.daily

av_report() {

    if [ `cat ${TMP_LOG}  | grep Infected | grep -v 0 | wc -l` != 0 ]
    then
	SUBJECT="[WARNING] `hostname` PASSED DAILY SCAN"
    fi

	EMAILMESSAGE=`mktemp /tmp/virus-alert.XXXXX`
    echo "To: ${EMAIL}" >>  ${EMAILMESSAGE}
    echo "From: root@server.com" >>  ${EMAILMESSAGE}
    echo "Subject: ${SUBJECT}" >>  ${EMAILMESSAGE}
    echo "Importance: High" >> ${EMAILMESSAGE}
    echo "X-Priority: 1" >> ${EMAILMESSAGE}
    echo "`tail -n 50 ${TMP_LOG}`" >> ${EMAILMESSAGE}
    sendmail -t < ${EMAILMESSAGE}

	cat ${TMP_LOG} >> ${LOG}
	rm -rf ${TMP_LOG}
}

av_scan() {
	touch ${TMP_LOG}
	clamscan -r / --exclude-dir=/sys/ --quiet --infected --log=${TMP_LOG}
}

av_scan
av_report