#!/bin/bash

rm -f file*.dat

for i in `seq 10 99` ; do
 let nbrline=$(( $RANDOM % 30 +1 ))
 for j in `seq 1 $nbrline` ; do
	 let yy=$(( $RANDOM % 113 + 1900 ))
	 let mm=$(( $RANDOM % 12 + 1 ))
 echo "$yy $mm" >> file$i.dat
 done
done
