This script generates random file names with random contents.

genfile.sh

if [ $# -ne 3 ]
then
echo "This script generates random file names with random contents"
echo "USAGE : $0 [prefix] [size] [count]"
echo "   prefix : prefix of file name to be generated"
echo "   size   : size of the file eg. 2048, 100k, 13M"
echo "   count  : number of files to be generated"
echo "EXAMPLE:"
echo " $0 tmp 10k 3"
echo " will generate 3 files having size of 10 KBytes each and named something like:"
echo "     tmp499abbd3.rand"
echo "     tmpd88f2e50.rand"
echo "     tmp9602da57.rand"
echo "  "
echo "Author: Ramazan POLAT - ramazanpolat@gmail.com"
exit 1
fi
PREFIX=$1
SIZE=$2
COUNT=$3
echo "prefix = $PREFIX"
echo "size = $SIZE"
echo "count = $COUNT"
echo "generating  $SIZE sized $COUNT files having names starting with $PREFIX..."
for ((  i = 1 ;  i <= $COUNT;  i++  ))
do
   #STR1=$(date +%N)
   STR2=$(echo $RANDOM$(date +%N) | md5sum)
   STR3="${STR2:1:15}"
   FILE="./$PREFIX$STR3.rand"
   #echo $FILE # show file name
   dd if=/dev/urandom of=$FILE bs=$SIZE count=1 &> /dev/null
   #echo " file $i / $COUNT is : $FILE"
done