test-filesystem.sh

#!/bin/sh
#

DST=${1:-$PWD}

rm -f /tmp/result.txt

for i in $(find $DST -name "*"); do
        file $i >/dev/null 2>&1
        if [ $? -eq 0 ]; then
                echo "$i --> OK"
        else
                echo "$i --> NOK"
                echo "$i --> NOK" >> /tmp/result.txt
        fi
done

dmesg -c | grep error
echo 3 > /proc/sys/vm/drop_caches