+ offset=`LC_ALL=C grep -b "BOOT_TIME:" /var/log/system.log \
+ | tail -n 1 | cut -d':' -f1`
+ if [ -n "$offset" ]; then
+ # reboot detected in system.log
+ error=`LC_ALL=C tail -c "+$offset" /var/log/system.log \
+ | grep "I/O" | grep -v nagcollect | tail -n 1`
+ else
+ # no reboot detected in system.log
+ error=`LC_ALL=C grep "I/O" /var/log/system.log \
+ | grep -v nagcollect | tail -n 1`
+ fi