#!/bin/bash
#save grep'd output of smartctl in i
export i=`sudo smartctl --all -v 234,hex48,Unknown_Attribute /dev/sda | grep "234 Unknown_A"`
#save max value (characters 93, 94 and 91, 92 from i)
export max=0x${i:93:2}${i:91:2}
#save avg value
export avg=0x${i:99:2}${i:97:2}
#append timestamp; date+time; avg; max (converted from hex to decimal)
echo `date +%s`\;`date +%Y-%m-%d\ %X`\;$((avg))\;$((max)) >> smart_erase_counts.csv
