Total traffic counter from MRTG log files

Script to count total traffic for last day for switch port from MRTG log files, and output file name, if total traffic is more than 10GB.

# period
sakums=`date -d -1day +%s`
# 1GB
ttrafic=$((1024*1024*1024))

pushd /var/www/mrtg
for fails in `find *log -mtime -1`
do tail -n +4 $fails | 
 awk -vsakums=$sakums -vfails=$fails   -vttrafic=$ttrafic '{ if ($1 > sakums)  
    {intr += ($2*300); outtr += ($3*300) }} 
    END   { if (outtr > 10000000000) 
    printf("%s\t%10.2f\t%10.2f\n",fails,intr/ttrafic,outtr/ttrafic) }'
done