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#!/bin/bash

for ((y=2009;y<=2009;y+=1)); do
	yyyy=`printf "%04d" $y`
	for ((m=12;m<=12;m+=1)); do
ay=`printf "%02d" $m`

	case "$m" in
	1)  nd=31
	;;
	2)  nd=28
	if [ $y -eq 2008 ]
		then
		nd=29
	fi
	;;
	3)  nd=31
	;;
	4)  nd=30
	;;
	5)  nd=31
	;;
	6)  nd=30
	;;
	7)  nd=31
	;;
	8)  nd=31
	;;
	9)  nd=30
	;;
	10)  nd=31
	;;
	11)  nd=30
	;;
	12)  nd=31
	;;
esac

for ((i=28;i<=$nd;i+=1)); do
	gun=`printf "%02d" $i`
for ((k=0;k<=18;k+=6)); do
	saat=`printf "%02d" $k`

echo gfsanl_4_${yyyy}${ay}${gun}_${saat}00_000.grb2

# wget -c --waitretry=100 -Ogfsanl_4_${yyyy}${ay}${gun}_${saat}00_000.grb2 "http://nomads.ncdc.noaa.gov/data/gfsanl/${yyyy}${ay}/${yyyy}${ay}${gun}/gfsanl_4_${yyyy}${ay}${gun}_${saat}00_000.grb2" &>>wget.log &

done
# wait # 4'er tane indirmesi için burada bekletiyoruz
done
done
done