#!/bin/bash

FTP_SERVER="202.100.139.30:8018"
FTP_USER="Manager"
FTP_PASS="KLZL18hdxcsj4F"
REMOTE_FILE="/ftp/download/12.txt"

for ((i=1; i<=9999; i++))
do
    echo " $i times..."
    wget --ftp-user=$FTP_USER --ftp-password=$FTP_PASS \
         -O "dl_dat_${i}.dat" \
         "ftp://$FTP_SERVER$REMOTE_FILE"

     sleep 0.5
done

echo "Done!"